{"common":{"save":0,"post_id":"6632","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6605","post_id":"6632","mon_id":"1158921","chapter_id":"1158933","question":"<p>T&igrave;m nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr&igrave;nh&nbsp;<span class=\"math-tex\">$\\dfrac{x+1}{2}-\\dfrac{3x-2}{4}=0$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$x =- 4$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$x = 4$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$x =-1$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$x =0$<\/span>"],"correct":"2","level":"3","hint":"<p>Quy \u0111\u1ed3ng m\u1eabu s\u1ed1 v&agrave; gi\u1ea3i ph\u01b0\u01a1ng tr&igrave;nh b\u1eb1ng 0<\/p>","answer":"<p><span class=\"math-tex\">$\\dfrac{x+1}{2}-\\dfrac{3x-2}{4} = 0$<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{2x+2}{4}-\\dfrac{3x-2}{4} = 0$<\/span><\/p><p><span class=\"math-tex\">$2x+2-3x+2=0$<\/span><\/p><p><span class=\"math-tex\">$-x+4=0$<\/span><\/p><p><span class=\"math-tex\">$x=4$<\/span><\/p><p>V\u1eady nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr&igrave;nh l&agrave;&nbsp;<span class=\"math-tex\">$x=4$<\/span>.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.&nbsp;<\/strong><span class=\"math-tex\">$x=4$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-29 22:11:54","option_type":"math","len":0},{"id":"6606","post_id":"6632","mon_id":"1158921","chapter_id":"1158933","question":"<p>Ph\u01b0\u01a1ng tr&igrave;nh n&agrave;o c&oacute; nghi\u1ec7m l&agrave; <span class=\"math-tex\">$x = -1$<\/span>?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{x}{3}=\\dfrac{2x+1}{2}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$6x+5=2x-3$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$2x-3=3x+1$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{3x+2}{5}=\\dfrac{2x+1}{5}$<\/span>"],"correct":"4","level":"3","hint":"","answer":"<p><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{x}{3}=\\dfrac{2x+1}{2}$<\/span>&nbsp;c&oacute; nghi\u1ec7m l&agrave;&nbsp;<span class=\"math-tex\">$x = \\dfrac{-3}{4}$<\/span>.<\/p><p><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$6x+5=2x-3$<\/span>&nbsp;c&oacute; nghi\u1ec7m l&agrave;&nbsp;<span class=\"math-tex\">$x =-2$<\/span>.<\/p><p><strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$2x-3=3x+1$<\/span>&nbsp;c&oacute; nghi\u1ec7m l&agrave;&nbsp;<span class=\"math-tex\">$x = -4$<\/span>.<\/p><p><strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{3x+2}{5}=\\dfrac{2x+1}{5}$<\/span>&nbsp;c&oacute; nghi\u1ec7m l&agrave;&nbsp;<span style=\"color:#16a085;\"><span class=\"math-tex\">$x = -1$<\/span><\/span>.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{3x+2}{5}=\\dfrac{2x+1}{5}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-29 22:16:15","option_type":"math","len":0},{"id":"6607","post_id":"6632","mon_id":"1158921","chapter_id":"1158933","question":"<p>T&igrave;m nghi\u1ec7m c\u1ee7a ph\u01b0\u01a1ng tr&igrave;nh&nbsp;<span class=\"math-tex\">$\\dfrac{2-5x}{3} = \\dfrac{4x+3}{4}$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$x= \\dfrac{-1}{32}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$x= \\dfrac{1}{32}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$x= \\dfrac{-1}{8}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$x= \\dfrac{-17}{8}$<\/span>"],"correct":"1","level":"3","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{2-5x}{3} = \\dfrac{4x+3}{4}$<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{8-20x}{12} = \\dfrac{12x+9}{12}$<\/span><\/p><p><span class=\"math-tex\">$8-20x = 12x+9$<\/span><\/p><p><span class=\"math-tex\">$-32x=1$<\/span><\/p><p><span class=\"math-tex\">$x= \\dfrac{-1}{32}$<\/span><\/p><p>V\u1eady ph\u01b0\u01a1ng tr&igrave;nh c&oacute; nghi\u1ec7m l&agrave;&nbsp;<span class=\"math-tex\">$x= \\dfrac{-1}{32}$<\/span>.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$x= \\dfrac{-1}{32}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-29 22:20:39","option_type":"math","len":0}]}