{"id":4616,"date":"2022-09-26T13:40:07","date_gmt":"2022-09-26T13:40:07","guid":{"rendered":"https:\/\/www.studyzonebd.com\/math\/?p=4616"},"modified":"2022-09-26T13:56:05","modified_gmt":"2022-09-26T13:56:05","slug":"class-7-chapter-7-lesson-7-3","status":"publish","type":"post","link":"https:\/\/www.studyzonebd.com\/math\/class-7-chapter-7-lesson-7-3\/","title":{"rendered":"\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed.\u09e9 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf"},"content":{"rendered":"\n<p>\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) <a href=\"https:\/\/en.wikipedia.org\/wiki\/Mathematics\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Math <\/a>Book Solution | <a href=\"https:\/\/www.studyzonebd.com\/math\">Chapter <\/a>07 : Simple Equation<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed.\u09e9: \u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0 \u09ae\u09be\u09a7\u09cd\u09af\u09ae\u09c7 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/h4>\n\n\n\n<p>\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed.\u09e9 \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 \u098f\u0996\u09be\u09a8\u09c7 \u09b0\u09df\u09c7\u099b\u09c7\u0964 \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/p>\n\n\n\n<h4 class=\"has-text-align-center has-ast-global-color-0-color has-text-color wp-block-heading\"><span style=\"text-decoration: underline;\"><strong>\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09b0 \u0997\u09a3\u09bf\u09a4 \u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed.\u09e9 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/strong><\/span><\/h4>\n\n\n\n<p><strong>\u09e7. x\/3-3=0 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09ae\u09c2\u09b2 \u09a8\u09bf\u099a\u09c7\u09b0 \u0995\u09cb\u09a8\u099f\u09bf?<\/strong><\/p>\n\n\n\n<p>(\u0995) 1\/3&nbsp;&nbsp;(\u0996) 3&nbsp;&nbsp;(\u0997) 9&nbsp;&nbsp;(\u0998) -9<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n<p><strong>\u09e8. \u098f\u0995\u099f\u09bf \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09ac\u09be\u09b9\u09c1 \u09a4\u09bf\u09a8\u099f\u09bf\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af (x+1) \u09b8\u09c7\u09ae\u09bf, (x+2) \u09b8\u09c7\u09ae\u09bf \u0993 (x+3) \u09b8\u09c7\u09ae\u09bf (x&gt;0)\u0964 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u099f\u09bf\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be 15 \u09b8\u09c7\u09ae\u09bf \u09b9\u09b2\u09c7, x \u098f\u09b0 \u09ae\u09be\u09a8 \u0995\u09a4?<\/strong><\/p>\n\n\n\n<p>(\u0995) 1 \u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;(\u0996) 2 \u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;(\u0997) 3 \u09b8\u09c7\u09ae\u09bf&nbsp;&nbsp;&nbsp;(\u0998) 6 \u09b8\u09c7\u09ae\u09bf<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<a><\/a><\/p>\n\n\n\n<p><strong>\u09e9. \u0995\u09cb\u09a8 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u098f\u0995-\u099a\u09a4\u09c1\u09b0\u09cd\u09a5\u09be\u0982\u09b6 4 \u098f\u09b0 \u09b8\u09ae\u09be\u09a8 \u09b9\u09ac\u09c7?<\/strong><\/p>\n\n\n\n<p>(\u0995) 16&nbsp;&nbsp;&nbsp;(\u0996) 12&nbsp;&nbsp;&nbsp;(\u0997) 4&nbsp;&nbsp;&nbsp;&nbsp;(\u0998) 1\/4<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n<p><strong>\u09ea. (2,-2) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u099f\u09bf \u0995\u09cb\u09a8 \u099a\u09a4\u09c1\u09b0\u09cd\u09ad\u09be\u0997\u09c7 \u0985\u09ac\u09b8\u09cd\u09a5\u09bf\u09a4?<\/strong><\/p>\n\n\n\n<p>(\u0995) \u09aa\u09cd\u09b0\u09a5\u09ae&nbsp;&nbsp;(\u0996) \u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09af\u09bc&nbsp;&nbsp;(\u0997) \u09a4\u09c3\u09a4\u09c0\u09af\u09bc&nbsp;&nbsp;(\u0998) \u099a\u09a4\u09c1\u09b0\u09cd\u09a5<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n<p><strong>\u09eb. y \u0985\u0995\u09cd\u09b7 \u09ac\u09b0\u09be\u09ac\u09b0 \u0995\u09cb\u09a8 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09b0 \u09ad\u09c1\u099c \u0995\u09a4?<\/strong><\/p>\n\n\n\n<p>(\u0995) 0&nbsp;&nbsp;&nbsp;(\u0996) 1&nbsp;&nbsp;&nbsp;&nbsp;(\u0997)&nbsp;&nbsp;-1&nbsp;&nbsp;&nbsp;(\u0998) y<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n<p><strong>\u09ec. \u09a6\u09c1\u0987\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u09ac\u09bf\u09af\u09bc\u09cb\u0997\u09ab\u09b2 y, \u09ac\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be\u099f\u09bf z \u09b9\u09b2\u09c7, \u099b\u09cb\u099f \u09b8\u0982\u0996\u09cd\u09af\u09be\u099f\u09bf \u0995\u09a4?<\/strong><\/p>\n\n\n\n<p>(\u0995) z-y&nbsp;&nbsp;&nbsp;(\u0996) z+y&nbsp;&nbsp;(\u0997) \u2013y-z&nbsp;&nbsp;&nbsp;(\u0998) \u2013z+y<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n<p><strong>\u09ed. ab\/xy\u098f\u09b0 \u09b8\u09ae\u09a4\u09c1\u09b2 \u09ad\u0997\u09cd\u09a8\u09be\u0982\u09b6 \u09a8\u09bf\u099a\u09c7\u09b0 \u0995\u09cb\u09a8\u099f\u09bf?<\/strong><\/p>\n\n\n\n<p>(\u0995) abc\/xyz&nbsp;&nbsp;&nbsp;(\u0996) a<sup>2<\/sup>b\/x<sup>2<\/sup>y&nbsp;&nbsp;&nbsp;(\u0997) 2ab\/2xy&nbsp;&nbsp;&nbsp;(\u0998) ab<sup>2<\/sup>\/xy<sup>2<br><\/sup>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n<p><strong>\u09ee. 3x+1=0 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u0998\u09be\u09a4 \u0995\u09a4?<\/strong><\/p>\n\n\n\n<p>(\u0995) -1\/3&nbsp;&nbsp;&nbsp;&nbsp;(\u0996) 1\/3&nbsp;&nbsp;&nbsp;&nbsp;(\u0997) 1&nbsp;&nbsp;&nbsp;&nbsp;(\u0998) 3<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n<p><strong>\u09ef. \u0995\u09cb\u09a8 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u09b8\u09be\u09a5\u09c7 -5 \u09af\u09cb\u0997 \u0995\u09b0\u09b2\u09c7 15 \u09b9\u09ac\u09c7?<\/strong><\/p>\n\n\n\n<p>(\u0995) -20&nbsp;&nbsp;&nbsp;(\u0996) 10&nbsp;&nbsp;&nbsp;&nbsp;(\u0997) -10&nbsp;&nbsp;&nbsp;(\u0998) 20<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n<p><strong>\u09e7\u09e6. x \u098f\u09b0 \u0995\u09cb\u09a8 \u09ae\u09be\u09a8 4x+1=2x+7&nbsp;&nbsp;\u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u0995\u09c7 \u09b8\u09bf\u09a6\u09cd\u09a7 \u0995\u09b0\u09c7?<\/strong><\/p>\n\n\n\n<p>(\u0995) 0\u00a0\u00a0\u00a0\u00a0(\u0996) 2\u00a0\u00a0\u00a0\u00a0\u00a0(\u0997) 3\u00a0\u00a0\u00a0\u00a0\u00a0(\u0998) 4<br>\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<a href=\"https:\/\/betzapdoson.com\/4\/5403626\"><\/a><a href=\"https:\/\/grunoaph.net\/4\/5403626\"><\/a><a href=\"https:\/\/intorterraon.com\/4\/5403633\"><\/a><a href=\"https:\/\/whairtoa.com\/4\/5403634\"><\/a><a href=\"https:\/\/moksoxos.com\/4\/5403634\"><\/a><\/p>\n\n\n\n<p><strong>\u09e7\u09e7. \u099a\u09bf\u09a4\u09cd\u09b0 \u09a5\u09c7\u0995\u09c7 \u09a8\u09bf\u099a\u09c7\u09b0 \u099b\u0995\u099f\u09bf \u09aa\u09c2\u09b0\u09a3 \u0995\u09b0\u0983<\/strong><\/p>\n\n\n\n<p><strong>(\u0989\u09ad\u09af\u09bc \u0985\u0995\u09cd\u09b7\u09c7 \u0995\u09cd\u09b7\u09c1\u09a6\u09cd\u09b0\u09a4\u09ae \u09ac\u09b0\u09cd\u0997\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09c7)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"312\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-101.jpg\" alt=\"\" class=\"wp-image-4620\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-101.jpg 312w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-101-293x300.jpg 293w\" sizes=\"(max-width: 312px) 100vw, 312px\" \/><\/figure>\n\n\n\n<p>\u09aa\u09c2\u09b0\u09a3\u0995\u09c3\u09a4 \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u099b\u0995\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u09b8\u09cd\u09a5\u09be\u09a8\u09be\u0999\u09cd\u0995<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">A<\/td><td class=\"has-text-align-center\" data-align=\"center\">(4,3)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">B<\/td><td class=\"has-text-align-center\" data-align=\"center\">(-2,2)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">C<\/td><td class=\"has-text-align-center\" data-align=\"center\">(3,-5)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">D<\/td><td class=\"has-text-align-center\" data-align=\"center\">(-3,-3)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">O<\/td><td class=\"has-text-align-center\" data-align=\"center\">(0,0)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">P<\/td><td class=\"has-text-align-center\" data-align=\"center\">(5,0)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Q<\/td><td class=\"has-text-align-center\" data-align=\"center\">(0,4)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u09e7\u09e8. \u09a8\u09bf\u099a\u09c7\u09b0 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u099b\u0995 \u0995\u09be\u0997\u099c\u09c7 \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09a4\u09c0\u09b0 \u099a\u09bf\u09b9\u09cd\u09a8 \u0985\u09a8\u09c1\u09af\u09be\u09af\u09bc\u09c0 \u09af\u09cb\u0997 \u0995\u09b0 \u0993 \u099a\u09bf\u09a4\u09cd\u09b0\u099f\u09bf\u09b0 \u099c\u09cd\u09af\u09be\u09ae\u09bf\u09a4\u09bf\u0995 \u09a8\u09be\u09ae\u0995\u09b0\u09a3 \u0995\u09b0\u0983<\/strong><\/p>\n\n\n\n<p><strong>(\u0995) (2,2)&nbsp;<\/strong><strong>\ud83e\udc12 (6,2) \ud83e\udc12 (6,6) \ud83e\udc12 (2,6) \ud83e\udc12 (2,2)<\/strong><\/p>\n\n\n\n<p><strong>(\u0996) (0,0) \ud83e\udc12 (-6,-6) \ud83e\udc12 (8,6) \ud83e\udc12 (0,0)<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<br>(\u0995)<br>\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964<br>\u099b\u0995 \u0995\u09be\u0997\u099c\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09e7 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09c7&nbsp;<strong>(2,2)<\/strong><strong>,<\/strong><strong>&nbsp;(6,2), (6,6), (2,6)<\/strong>&nbsp;\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09a4\u09c0\u09b0 \u099a\u09bf\u09b9\u09cd\u09a8 \u0985\u09a8\u09c1\u09af\u09be\u09af\u09bc\u09c0 \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09b2\u09cb-<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"313\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-102.jpg\" alt=\"\" class=\"wp-image-4622\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-102.jpg 313w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-102-293x300.jpg 293w\" sizes=\"(max-width: 313px) 100vw, 313px\" \/><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u09a6\u09c7\u0996\u09be \u0997\u09c7\u09b2 \u098f\u099f\u09bf \u098f\u0995\u099f\u09bf \u09ac\u09b0\u09cd\u0997\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7\u09b0 \u099a\u09bf\u09a4\u09cd\u09b0\u0964<\/p>\n\n\n\n<p>(\u0996)<\/p>\n\n\n\n<p>\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964<br>\u099b\u0995 \u0995\u09be\u0997\u099c\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09e7 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09c7&nbsp;<strong>(0,0), (-6,-6), (8,6)&nbsp;<\/strong>\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09a4\u09c0\u09b0 \u099a\u09bf\u09b9\u09cd\u09a8 \u0985\u09a8\u09c1\u09af\u09be\u09af\u09bc\u09c0 \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09b2\u09cb-<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"309\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-103.jpg\" alt=\"\" class=\"wp-image-4623\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-103.jpg 309w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-103-290x300.jpg 290w\" sizes=\"(max-width: 309px) 100vw, 309px\" \/><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u09a6\u09c7\u0996\u09be \u0997\u09c7\u09b2 \u098f\u099f\u09bf \u098f\u0995\u099f\u09bf \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u099a\u09bf\u09a4\u09cd\u09b0\u0964<\/p>\n\n\n\n<p><strong>\u09e7\u09e9. \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u0995\u09b0 \u098f\u09ac\u0982 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u09a6\u09c7\u0996\u09be\u0993\u0983<\/strong><\/p>\n\n\n\n<p><strong>(\u0995) x-4=0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(\u0996) 2x+4=0<\/strong><\/p>\n\n\n\n<p><strong>(\u0997) x+3=8&nbsp;&nbsp;&nbsp;&nbsp;(\u0998) 2x+1=x-3<br><\/strong><strong>(\u0999) 3x+4=5x<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n<p><strong>(\u0995)<br><\/strong>x-4=0<br>\u09ac\u09be, x=4<\/p>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u0983<\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3, x-4=0. x \u098f\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u099f\u09bf \u09ae\u09be\u09a8 \u09a8\u09bf\u09af\u09bc\u09c7 x-4 \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u09ae\u09be\u09a8 \u09ac\u09c7\u09b0 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09a8\u09bf\u099a\u09c7\u09b0 \u099b\u0995\u099f\u09bf \u09a4\u09c8\u09b0\u09bf \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">x-4<\/td><td class=\"has-text-align-center\" data-align=\"center\">(x,x-4)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">-4<\/td><td class=\"has-text-align-center\" data-align=\"center\">(0,-4)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">4<\/td><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">(4,0)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">8<\/td><td class=\"has-text-align-center\" data-align=\"center\">4<\/td><td class=\"has-text-align-center\" data-align=\"center\">(8,4)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u09c7\u09b0 \u099c\u09a8\u09cd\u09af \u09a4\u09bf\u09a8\u099f\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 (0,-4), (4,0),(8,4) \u09a8\u09c7\u0993\u09af\u09bc\u09be \u09b9\u09b2\u09cb\u0964 \u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964 \u099b\u0995 \u0995\u09be\u0997\u099c\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09e7 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09c7&nbsp;<strong>(0,-4), (4,0), (8,4)&nbsp;<\/strong>\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u0982\u09af\u09cb\u0997 \u0995\u09b0\u09bf\u0964<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"309\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-104.jpg\" alt=\"\" class=\"wp-image-4626\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-104.jpg 309w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-104-290x300.jpg 290w\" sizes=\"(max-width: 309px) 100vw, 309px\" \/><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0987\u0964 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be\u099f\u09bf x-\u0985\u0995\u09cd\u09b7\u0995\u09c7 (4,0) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u0964\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u099f\u09bf\u09b0 \u09ad\u09c1\u099c \u09b9\u09b2\u09cb 4. \u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 x=4.<\/p>\n\n\n\n<p><strong>(\u0996)<\/strong><\/p>\n\n\n\n<p>2x+4=0<br>\u09ac\u09be, 2x=-4<br>\u09ac\u09be, x=-4\/2<br>\u09ac\u09be, x=-2<\/p>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u0983<\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3, 2x+4=0. x \u098f\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u099f\u09bf \u09ae\u09be\u09a8 \u09a8\u09bf\u09af\u09bc\u09c7 2x+4 \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u09ae\u09be\u09a8 \u09ac\u09c7\u09b0 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09a8\u09bf\u099a\u09c7\u09b0 \u099b\u0995\u099f\u09bf \u09a4\u09c8\u09b0\u09bf \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">x-4<\/td><td class=\"has-text-align-center\" data-align=\"center\">(x,2x+4)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">4<\/td><td class=\"has-text-align-center\" data-align=\"center\">(0,4)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">8<\/td><td class=\"has-text-align-center\" data-align=\"center\">(2,8)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">-2<\/td><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">(-2,0)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u09c7\u09b0 \u099c\u09a8\u09cd\u09af \u09a4\u09bf\u09a8\u099f\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 (0,-4), (2,8),(-2,0) \u09a8\u09c7\u0993\u09af\u09bc\u09be \u09b9\u09b2\u09cb\u0964 \u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964 \u099b\u0995 \u0995\u09be\u0997\u099c\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09e7 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09c7 (0,-4), (2,8),(-2,0) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u0982\u09af\u09cb\u0997 \u0995\u09b0\u09bf\u0964<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"310\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-105.jpg\" alt=\"\" class=\"wp-image-4632\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-105.jpg 310w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-105-291x300.jpg 291w\" sizes=\"(max-width: 310px) 100vw, 310px\" \/><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0987\u0964 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be\u099f\u09bf x-\u0985\u0995\u09cd\u09b7\u0995\u09c7 (-2,0) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u0964\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u099f\u09bf\u09b0 \u09ad\u09c1\u099c \u09b9\u09b2\u09cb -2. \u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 x=-2.<\/p>\n\n\n\n<p><strong>(\u0997)<\/strong><\/p>\n\n\n\n<p>x+3=8<br>\u09ac\u09be, x=8-3<br>\u09ac\u09be, x=5<\/p>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u0983<\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3, x+3=8 \u09ac\u09be, x+3-8=0 \u09ac\u09be, x-5=0. x \u098f\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u099f\u09bf \u09ae\u09be\u09a8 \u09a8\u09bf\u09af\u09bc\u09c7 x-5 \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u09ae\u09be\u09a8 \u09ac\u09c7\u09b0 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09a8\u09bf\u099a\u09c7\u09b0 \u099b\u0995\u099f\u09bf \u09a4\u09c8\u09b0\u09bf \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">x-5<\/td><td class=\"has-text-align-center\" data-align=\"center\">(x,x-5)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">-5<\/td><td class=\"has-text-align-center\" data-align=\"center\">(0,-5)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">5<\/td><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">(5,0)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">7<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">(7,2)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u09c7\u09b0 \u099c\u09a8\u09cd\u09af \u09a4\u09bf\u09a8\u099f\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 (0,-5), (5,0),(7,2) \u09a8\u09c7\u0993\u09af\u09bc\u09be \u09b9\u09b2\u09cb\u0964 \u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964 \u099b\u0995 \u0995\u09be\u0997\u099c\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09e7 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09c7 (0,-5), (5,0),(7,2 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u0982\u09af\u09cb\u0997 \u0995\u09b0\u09bf\u0964<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"308\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-106.jpg\" alt=\"\" class=\"wp-image-4634\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-106.jpg 308w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-106-289x300.jpg 289w\" sizes=\"(max-width: 308px) 100vw, 308px\" \/><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0987\u0964 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be\u099f\u09bf x-\u0985\u0995\u09cd\u09b7\u0995\u09c7 (5,0) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u0964\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u099f\u09bf\u09b0 \u09ad\u09c1\u099c \u09b9\u09b2\u09cb 5. \u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 x=-5.<\/p>\n\n\n\n<p><strong>(\u0998)<\/strong><\/p>\n\n\n\n<p>2x+1=x-3<br>\u09ac\u09be, 2x-x=-3-1<br>\u09ac\u09be, x=-4<\/p>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u0983<\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3, 2x+1=x-3 \u098f\u09b0 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995 \u09aa\u0995\u09cd\u09b7\u0995\u09c7 y \u09a7\u09b0\u09bf\u0964<br>\u0985\u09a4\u098f\u09ac, y=2x+1 \u098f\u09ac\u0982 y=x-3.<br>y=2x+1 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b2\u09c7\u0996\u09c7\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u099f\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09b0 \u09b8\u09cd\u09a5\u09be\u09a8\u09be\u0999\u09cd\u0995 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">-1<\/td><td class=\"has-text-align-center\" data-align=\"center\">-4<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">y<\/td><td class=\"has-text-align-center\" data-align=\"center\">3<\/td><td class=\"has-text-align-center\" data-align=\"center\">-1<\/td><td class=\"has-text-align-center\" data-align=\"center\">-7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0986\u09ac\u09be\u09b0, y=x-3 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b2\u09c7\u0996\u09c7\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u09a4\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09b0 \u09b8\u09cd\u09a5\u09be\u09a8\u09be\u0999\u09cd\u0995 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">-1<\/td><td class=\"has-text-align-center\" data-align=\"center\">-4<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">y<\/td><td class=\"has-text-align-center\" data-align=\"center\">-1<\/td><td class=\"has-text-align-center\" data-align=\"center\">-4<\/td><td class=\"has-text-align-center\" data-align=\"center\">-7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"308\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-107.jpg\" alt=\"\" class=\"wp-image-4636\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-107.jpg 308w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-107-289x300.jpg 289w\" sizes=\"(max-width: 308px) 100vw, 308px\" \/><\/figure>\n\n\n\n<p>\u0989\u09ad\u09af\u09bc \u0985\u0995\u09cd\u09b7\u09c7 \u0995\u09cd\u09b7\u09c1\u09a6\u09cd\u09b0\u09a4\u09ae \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09bf\u0964 (1,3), (-1,-1) \u0993 (-4,-7) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b2\u09c7\u0996 \u0995\u09be\u0997\u099c\u09c7 \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c7 \u09ac\u09b0\u09cd\u09a7\u09bf\u09a4 \u0995\u09b0\u09bf\u0964 \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0993\u09af\u09bc\u09be \u0997\u09c7\u09b2 \u09af\u09be y=2x+1 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u099f\u09bf\u09b0 \u09b2\u09c7\u0996\u0964<\/p>\n\n\n\n<p>\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n<p>(2,-1), (-1,-4) \u0993 (-4,-7) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b2\u09c7\u0996 \u0995\u09be\u0997\u099c\u09c7 \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c7 \u09ac\u09b0\u09cd\u09a7\u09bf\u09a4 \u0995\u09b0\u09bf\u0964 \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0993\u09af\u09bc\u09be \u0997\u09c7\u09b2 \u09af\u09be y=x-3 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u099f\u09bf\u09b0 \u09b2\u09c7\u0996\u0964<\/p>\n\n\n\n<p>\u098f\u0987 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09c2\u09b0\u09cd\u09ac\u09cb\u0995\u09cd\u09a4 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be\u0995\u09c7 A \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u0964 A \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u0989\u09ad\u09af\u09bc \u09b0\u09c7\u0996\u09be\u09b0 \u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964 \u098f\u09b0 \u09b8\u09cd\u09a5\u09be\u09a8\u09be\u0999\u09cd\u0995 \u0989\u09ad\u09af\u09bc \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u0995\u09c7 \u09b8\u09bf\u09a6\u09cd\u09a7 \u0995\u09b0\u09c7\u0964 \u09b2\u09c7\u0996 \u09a5\u09c7\u0995\u09c7 \u09a6\u09c7\u0996\u09be \u09af\u09be\u09af\u09bc \u09af\u09c7, A \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09b0 \u09ad\u09c1\u099c -4.<\/p>\n\n\n\n<p>\u09b8\u09c1\u09a4\u09b0\u09be\u0982, \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09ae\u09be\u09a7\u09be\u09a8 x=-4.<\/p>\n\n\n\n<p><strong>(\u0999)<\/strong><\/p>\n\n\n\n<p>3x+4=5x<br>\u09ac\u09be, 3x-5x=-4<br>\u09ac\u09be, -2x=-4<br>\u09ac\u09be, x=-4\/-2<br>\u09ac\u09be, x=2<\/p>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u0983<\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3, 3x+4=5x \u098f\u09b0 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995 \u09aa\u0995\u09cd\u09b7\u0995\u09c7 y \u09a7\u09b0\u09bf\u0964<\/p>\n\n\n\n<p>\u0985\u09a4\u098f\u09ac, y=3x+4 \u098f\u09ac\u0982 y=5x.<\/p>\n\n\n\n<p>y=3x+4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b2\u09c7\u0996\u09c7\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u099f\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09b0 \u09b8\u09cd\u09a5\u09be\u09a8\u09be\u0999\u09cd\u0995 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">-2<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">y<\/td><td class=\"has-text-align-center\" data-align=\"center\">7<\/td><td class=\"has-text-align-center\" data-align=\"center\">10<\/td><td class=\"has-text-align-center\" data-align=\"center\">-2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0986\u09ac\u09be\u09b0, y=5x \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b2\u09c7\u0996\u09c7\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u09a4\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09b0 \u09b8\u09cd\u09a5\u09be\u09a8\u09be\u0999\u09cd\u0995 \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">-1<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">y<\/td><td class=\"has-text-align-center\" data-align=\"center\">5<\/td><td class=\"has-text-align-center\" data-align=\"center\">10<\/td><td class=\"has-text-align-center\" data-align=\"center\">-5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"282\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-108.jpg\" alt=\"\" class=\"wp-image-4638\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-108.jpg 282w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-108-264x300.jpg 264w\" sizes=\"(max-width: 282px) 100vw, 282px\" \/><\/figure>\n\n\n\n<p>\u0989\u09ad\u09af\u09bc \u0985\u0995\u09cd\u09b7\u09c7 \u0995\u09cd\u09b7\u09c1\u09a6\u09cd\u09b0\u09a4\u09ae \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09bf\u0964 (1,7), (2,10) \u0993 (-2,-2) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b2\u09c7\u0996 \u0995\u09be\u0997\u099c\u09c7 \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c7 \u09ac\u09b0\u09cd\u09a7\u09bf\u09a4 \u0995\u09b0\u09bf\u0964 \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0993\u09af\u09bc\u09be \u0997\u09c7\u09b2 \u09af\u09be y=3x+4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u099f\u09bf\u09b0 \u09b2\u09c7\u0996\u0964<\/p>\n\n\n\n<p>\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n<p>(1,5), (2,10) \u0993 (-1,-5) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b2\u09c7\u0996 \u0995\u09be\u0997\u099c\u09c7 \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c7 \u09ac\u09b0\u09cd\u09a7\u09bf\u09a4 \u0995\u09b0\u09bf\u0964 \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0993\u09af\u09bc\u09be \u0997\u09c7\u09b2 \u09af\u09be y=5x \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u099f\u09bf\u09b0 \u09b2\u09c7\u0996\u0964<\/p>\n\n\n\n<p>\u098f\u0987 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09c2\u09b0\u09cd\u09ac\u09cb\u0995\u09cd\u09a4 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be\u0995\u09c7 A \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u0964 A \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 \u0989\u09ad\u09af\u09bc \u09b0\u09c7\u0996\u09be\u09b0 \u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964 \u098f\u09b0 \u09b8\u09cd\u09a5\u09be\u09a8\u09be\u0999\u09cd\u0995 \u0989\u09ad\u09af\u09bc \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u0995\u09c7 \u09b8\u09bf\u09a6\u09cd\u09a7 \u0995\u09b0\u09c7\u0964 \u09b2\u09c7\u0996 \u09a5\u09c7\u0995\u09c7 \u09a6\u09c7\u0996\u09be \u09af\u09be\u09af\u09bc \u09af\u09c7, A \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09b0 \u09ad\u09c1\u099c 2.<\/p>\n\n\n\n<p>\u09b8\u09c1\u09a4\u09b0\u09be\u0982, \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09ae\u09be\u09a7\u09be\u09a8 x=2.<\/p>\n\n\n\n<p><strong>\u09e7\u09ea. \u098f\u0995\u099f\u09bf \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09a4\u09bf\u09a8 \u09ac\u09be\u09b9\u09c1\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af (x+2) \u09b8\u09c7\u09ae\u09bf, (x+4) \u09b8\u09c7\u09ae\u09bf \u0993 (x+6) \u09b8\u09c7\u09ae\u09bf (x&gt;0) \u098f\u09ac\u0982 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u099f\u09bf\u09b0 \u09aa\u09b0\u09bf\u09b8\u09c0\u09ae\u09be 18 \u09b8\u09c7\u09ae\u09bf\u0964<\/strong><\/p>\n\n\n\n<p><strong>\u0995. \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b6\u09b0\u09cd\u09a4\u09be\u09a8\u09c1\u09af\u09be\u09af\u09bc\u09c0 \u0986\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995 \u099a\u09bf\u09a4\u09cd\u09b0 \u0986\u0981\u0995\u0964<\/strong><\/p>\n\n\n\n<p><strong>\u0996. \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 \u0997\u09a0\u09a8 \u0995\u09b0\u09c7 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u0995\u09b0\u0964<br><\/strong><strong>\u0997. \u09b8\u09ae\u09be\u09a7\u09be\u09a8\u09c7\u09b0 \u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0986\u0981\u0995\u0964<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n<p><strong>(\u0995)<\/strong><\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b6\u09b0\u09cd\u09a4\u09be\u09a8\u09c1\u09af\u09be\u09af\u09bc\u09c0 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0986\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995 \u099a\u09bf\u09a4\u09cd\u09b0 \u0986\u0981\u0995\u09be \u09b9\u09b2\u09cb\u0983<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"234\" height=\"232\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-109.jpg\" alt=\"\" class=\"wp-image-4640\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-109.jpg 234w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-109-150x150.jpg 150w\" sizes=\"(max-width: 234px) 100vw, 234px\" \/><\/figure>\n\n\n\n<p><strong>(\u0996)<\/strong><\/p>\n\n\n\n<p>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09ae\u09a4\u09c7,<br>(x+2)+(x+4)+(x+6)=18<br>\u09ac\u09be, 3x+12=18<br>\u09ac\u09be, 3x=18-12<br>\u09ac\u09be, 3x=6<br>\u09ac\u09be, x=6\/3<br>\u09ac\u09be, x=2<\/p>\n\n\n\n<p><strong>(\u0997)<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u0995\u09b0\u09c7 \u09aa\u09be\u0987,<\/p>\n\n\n\n<p>x=2<\/p>\n\n\n\n<p>\u09ac\u09be, x-2=0<\/p>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u0983<\/p>\n\n\n\n<p>x-2=0 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7, x \u098f\u09b0 \u0995\u09af\u09bc\u09c7\u0995\u099f\u09bf \u09ae\u09be\u09a8 \u09a8\u09bf\u09af\u09bc\u09c7 x-2 \u098f\u09b0 \u0985\u09a8\u09c1\u09b0\u09c2\u09aa \u09ae\u09be\u09a8 \u09ac\u09c7\u09b0 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09a8\u09bf\u099a\u09c7\u09b0 \u099b\u0995\u099f\u09bf \u09a4\u09c8\u09b0\u09bf \u0995\u09b0\u09bf\u0983<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">x<\/td><td class=\"has-text-align-center\" data-align=\"center\">x-2<\/td><td class=\"has-text-align-center\" data-align=\"center\">(x,x-2)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">-2<\/td><td class=\"has-text-align-center\" data-align=\"center\">(0,-2)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><td class=\"has-text-align-center\" data-align=\"center\">(2,0)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">4<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">(4,2)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0 \u0985\u0999\u09cd\u0995\u09a8\u09c7\u09b0 \u099c\u09a8\u09cd\u09af \u09a4\u09bf\u09a8\u099f\u09bf \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1 (0,-2), (2,0), (4,2) \u09a8\u09c7\u0993\u09af\u09bc\u09be \u09b9\u09b2\u09cb\u0964 \u09ae\u09a8\u09c7 \u0995\u09b0\u09bf, \u09aa\u09b0\u09b8\u09cd\u09aa\u09b0 \u09b2\u09ae\u09cd\u09ac \u09b0\u09c7\u0996\u09be XOX\u2019 \u0993 YOY\u2019 \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 x-\u0985\u0995\u09cd\u09b7 \u0993 y-\u0985\u0995\u09cd\u09b7 \u098f\u09ac\u0982 O \u09ae\u09c2\u09b2\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0964 \u099b\u0995 \u0995\u09be\u0997\u099c\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf \u09e7 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u0995\u09c7 \u098f\u0995\u0995 \u09a7\u09b0\u09c7 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09bf \u098f\u09ac\u0982 \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u0997\u09c1\u09b2\u09cb \u09b8\u0982\u09af\u09cb\u0997 \u0995\u09b0\u09bf\u0964<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"308\" height=\"320\" src=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-110.jpg\" alt=\"\" class=\"wp-image-4642\" srcset=\"https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-110.jpg 308w, https:\/\/www.studyzonebd.com\/math\/wp-content\/uploads\/2022\/09\/class-7-chapter-7-lesson-7.3-110-289x300.jpg 289w\" sizes=\"(max-width: 308px) 100vw, 308px\" \/><\/figure>\n\n\n\n<p>\u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be \u09aa\u09be\u0987\u0964 \u09b8\u09b0\u09b2\u09b0\u09c7\u0996\u09be\u099f\u09bf x-\u0985\u0995\u09cd\u09b7\u0995\u09c7 (2,0) \u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u09a4\u09c7 \u099b\u09c7\u09a6 \u0995\u09b0\u09c7\u0964\u09ac\u09bf\u09a8\u09cd\u09a6\u09c1\u099f\u09bf\u09b0 \u09ad\u09c1\u099c \u09b9\u09b2\u09cb 2. \u09b8\u09c1\u09a4\u09b0\u09be\u0982 \u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3\u09c7\u09b0 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 x=2.<\/p>\n\n\n\n<p><strong>\u09e7\u09eb. \u09a2\u09be\u0995\u09be \u0993 \u0986\u09b0\u09bf\u099a\u09be\u09b0 \u09ae\u09a7\u09cd\u09af\u09ac\u09b0\u09cd\u09a4\u09c0 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac 77 \u0995\u09bf\u09ae\u09bf\u0964 \u098f\u0995\u099f\u09bf \u09ac\u09be\u09b8 \u0998\u09a3\u09cd\u099f\u09be\u09af\u09bc 30 \u0995\u09bf\u09ae\u09bf \u09ac\u09c7\u0997\u09c7 \u09a2\u09be\u0995\u09be \u09a5\u09c7\u0995\u09c7 \u0986\u09b0\u09bf\u099a\u09be\u09b0 \u09aa\u09a5\u09c7 \u09b0\u0993\u09a8\u09be \u09a6\u09bf\u09b2\u0964 \u0985\u09aa\u09b0 \u098f\u0995\u099f\u09bf \u09ac\u09be\u09b8 \u0998\u09a3\u09cd\u099f\u09be\u09af\u09bc 40 \u0995\u09bf\u09ae\u09bf \u09ac\u09c7\u0997\u09c7 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\u0997\u09a8\u09cd\u09a4\u09ac\u09cd\u09af\u09b8\u09cd\u09a5\u09be\u09a8\u09c7 \u09aa\u09cc\u0981\u099b\u09be\u09a4\u09c7 \u0995\u09cb\u09a8 \u09ac\u09be\u09b8\u09c7\u09b0 \u0995\u09a4 \u09b8\u09ae\u09af\u09bc \u09b2\u09be\u0997\u09ac\u09c7?<\/strong><\/p>\n\n\n\n<p>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n<p><strong>\u0995.<\/strong><\/p>\n\n\n\n<p>\u09a2\u09be\u0995\u09be \u09a5\u09c7\u0995\u09c7 \u0986\u09b0\u09bf\u099a\u09be\u09b0 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac 77 \u0995\u09bf\u09ae\u09bf<br>\u09a2\u09be\u0995\u09be \u09a5\u09c7\u0995\u09c7 \u09ac\u09be\u09b8 \u09a6\u09c1\u0987\u099f\u09bf\u09b0 \u09ae\u09bf\u09b2\u09a8 \u09b8\u09cd\u09a5\u09be\u09a8\u09c7\u09b0 \u09a6\u09c2\u09b0\u09a4\u09cd\u09ac x \u0995\u09bf\u09ae\u09bf<br>\u09a4\u09be\u09b9\u09b2\u09c7, \u0986\u09b0\u09bf\u099a\u09be \u09a5\u09c7\u0995\u09c7 \u09ac\u09be\u09b8 \u09a6\u09c1\u0987\u099f\u09bf\u09b0 \u09ae\u09bf\u09b2\u09a8 \u09b8\u09cd\u09a5\u09be\u09a8\u09c7\u09b0 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\u0998\u09a8\u09cd\u099f\u09be\u09af\u09bc<br>\u098f\u0996\u09a8,<br>\u09ac\u09be\u09b8 \u09a6\u09c1\u0987\u099f\u09bf \u098f\u0995\u0987 \u09b8\u09ae\u09af\u09bc \u099b\u09be\u09a1\u09bc\u09c7 \u0993 \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u09b8\u09ae\u09af\u09bc \u09aa\u09b0 \u09ae\u09bf\u09b2\u09bf\u09a4 \u09b9\u09af\u09bc\u0964<br>\u0985\u09a4\u098f\u09ac,<br>x\/30=(77-x)\/40<br>\u09ac\u09be, x\u271540=30\u2715(77-x)<br>\u09ac\u09be, x\u27154=3\u2715(77-x) [10 \u09a6\u09cd\u09ac\u09be\u09b0\u09be \u09ad\u09be\u0997 \u0995\u09b0\u09c7]<br>\u09ac\u09be, 4x=231-3x<br>\u09ac\u09be, 4x+3x=231<br>\u09ac\u09be, 7x=231<br>\u09ac\u09be, x=231\/7<br>\u09ac\u09be, x=33<\/p>\n\n\n\n<p><strong>\u0997.<\/strong><\/p>\n\n\n\n<p>\u09e7\u09ae \u09ac\u09be\u09b8 30 \u0995\u09bf\u09ae\u09bf \u09af\u09be\u09af\u09bc 1 \u0998\u09a8\u09cd\u099f\u09be\u09af\u09bc<br>\u2234\u09e7\u09ae \u09ac\u09be\u09b8 1 \u0995\u09bf\u09ae\u09bf \u09af\u09be\u09af\u09bc 1\/30 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\u0998\u09a8\u09cd\u099f\u09be 34 \u09ae\u09bf\u09a8\u09bf\u099f \u0993 \u09e8\u09af\u09bc \u09ac\u09be\u09b8\u09c7\u09b0 \u09b2\u09be\u0997\u09c7 1 \u0998\u09a3\u09cd\u099f\u09be 55 \u09ae\u09bf\u09a8\u09bf\u099f 30 \u09b8\u09c7\u0995\u09c7\u09a8\u09cd\u09a1\u0964<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<pre class=\"wp-block-preformatted\"><em>tags: <\/em>Class 7 Math book solution BD pdf, Math lecture guide for class 7,class 7 math BD pdf,\u0997\u09a3\u09bf\u09a4 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0-\u09ed.\u09e9 \u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0 \u09ae\u09be\u09a7\u09cd\u09af\u09ae\u09c7 \u09b8\u09ae\u09be\u09a7\u09be\u09a8\r<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Seven (07) Math Book Solution | Chapter 07 : Simple Equation \u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed.\u09e9: \u09b2\u09c7\u0996\u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0 \u09ae\u09be\u09a7\u09cd\u09af\u09ae\u09c7 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed.\u09e9 \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 \u098f\u0996\u09be\u09a8\u09c7 \u09b0\u09df\u09c7\u099b\u09c7\u0964 \u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u09ed\u09ae [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4333,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[33],"tags":[35,34],"class_list":["post-4616","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-seven-7","tag-class-7","tag-class-seven"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09b0\u09b2 \u09b8\u09ae\u09c0\u0995\u09b0\u09a3 | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed.\u09e9 | \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD<\/title>\n<meta name=\"description\" content=\"\u09ed\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 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