{"common":{"save":0,"post_id":"4775","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7985","post_id":"4775","mon_id":"1158113","chapter_id":"1158119","question":"<p>T&igrave;m x bi\u1ebft<\/p><p>x -&nbsp;<span class=\"math-tex\">$\\dfrac{7}{12}$<\/span>&nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{11}{18}$<\/span><\/p>","options":["x = <span class=\"math-tex\">$\\dfrac{43}{36}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{-43}{36}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{1}{36}$<\/span>"],"correct":"1","level":"2","hint":"<p>T&igrave;m s\u1ed1 b\u1ecb tr\u1eeb = hi\u1ec7u + s\u1ed1 tr\u1eeb<\/p><p>Ch&uacute; &yacute; c&aacute;c quy t\u1eafc c\u1ed9ng tr\u1eeb ph&acirc;n s\u1ed1 kh&aacute;c m\u1eabu v&agrave; c&ugrave;ng m\u1eabu.<\/p>","answer":"<p>x -&nbsp;<span class=\"math-tex\">$\\dfrac{7}{12}$<\/span>&nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{11}{18}$<\/span>&nbsp; &nbsp;<\/p><p>x &nbsp;&nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{11}{18}$<\/span>&nbsp;+&nbsp;<span class=\"math-tex\">$\\dfrac{7}{12}$<\/span>&nbsp; &nbsp;&nbsp;(m\u1eabu chung l&agrave; 36)<\/p><p>x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{22}{36}+\\dfrac{21}{36}$<\/span><\/p><p>x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{43}{36}$<\/span><\/p><p>V\u1eady x =&nbsp;<span class=\"math-tex\">$\\dfrac{43}{36}$<\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong> &nbsp;x =&nbsp;<span class=\"math-tex\">$\\dfrac{43}{36}$<\/span><\/strong><\/span><\/p><p><strong>&nbsp;&nbsp;<\/strong><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-01 23:25:55","option_type":"math","len":0},{"id":"7987","post_id":"4775","mon_id":"1158113","chapter_id":"1158119","question":"<p>T&igrave;m x bi\u1ebft<\/p><p><span class=\"math-tex\">$\\dfrac{3}{2}$<\/span>&nbsp;- x =&nbsp;<span class=\"math-tex\">$\\dfrac{5}{8}$<\/span><\/p>","options":["x = <span class=\"math-tex\">$\\dfrac{7}{8}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{-7}{8}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{17}{8}$<\/span>"],"correct":"1","level":"2","hint":"<p>T&igrave;m s\u1ed1 tr\u1eeb = s\u1ed1 b\u1ecb tr\u1eeb - hi\u1ec7u<\/p>","answer":"<p><span class=\"math-tex\">$\\dfrac{3}{2}$<\/span>&nbsp;- x =&nbsp;<span class=\"math-tex\">$\\dfrac{5}{8}$<\/span><\/p><p>&nbsp; &nbsp; &nbsp; x =&nbsp;<span class=\"math-tex\">$\\dfrac{3}{2}-\\dfrac{5}{8}$<\/span>&nbsp; &nbsp;(m\u1eabu chung l&agrave; 8)<\/p><p>&nbsp; &nbsp; &nbsp; x =&nbsp;<span class=\"math-tex\">$\\dfrac{12}{8}-\\dfrac{5}{8}$<\/span><\/p><p>&nbsp; &nbsp; &nbsp; x =&nbsp;<span class=\"math-tex\">$\\dfrac{7}{8}$<\/span><\/p><p>V\u1eady x =&nbsp;<span class=\"math-tex\">$\\dfrac{7}{8}$<\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong> x =<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{7}{8}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2021-10-01 23:28:37","option_type":"math","len":0},{"id":"7989","post_id":"4775","mon_id":"1158113","chapter_id":"1158119","question":"<p>Ch\u1ecdn ph&eacute;p t&iacute;nh cho k\u1ebft qu\u1ea3&nbsp;<strong>\u0111&uacute;ng<\/strong><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{17}{8}-\\dfrac{15}{16}+\\dfrac{19}{24}=\\dfrac{-95}{48}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{58}{23}-\\dfrac{37}{46}-\\dfrac{5}{23}=\\dfrac{3}{2}$<\/span>"],"correct":"2","level":"2","hint":"<p>Mu\u1ed1n c\u1ed9ng hay tr\u1eeb nhi\u1ec1u ph&acirc;n s\u1ed1 kh&ocirc;ng c&ugrave;ng m\u1eabu, ta quy \u0111\u1ed3ng m\u1eabu s\u1ed1 c&aacute;c ph&acirc;n s\u1ed1 r\u1ed3i c\u1ed9ng hay tr\u1eeb c&aacute;c t\u1eed v&agrave; gi\u1eef nguy&ecirc;n m\u1eabu c\u1ee7a c&aacute;c ph&acirc;n s\u1ed1 v\u1eeba t&igrave;m \u0111\u01b0\u1ee3c.<\/p>","answer":"<p><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{17}{8}-\\dfrac{15}{16}+\\dfrac{19}{24}=\\dfrac{-95}{48}$<\/span>&nbsp;(<span style=\"color:#c0392b;\">sai <\/span><br \/>v&igrave; <span class=\"math-tex\">$\\dfrac{17}{8}-\\dfrac{15}{16}+\\dfrac{19}{24}=\\dfrac{102}{48}-\\dfrac{45}{48}+\\dfrac{38}{48}=\\dfrac{102-45+38}{95}=\\dfrac{95}{48}$<\/span>)<\/p><p><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{58}{23}-\\dfrac{37}{46}-\\dfrac{5}{23}=\\dfrac{3}{2}$<\/span>&nbsp;(<span style=\"color:#16a085;\">\u0111&uacute;ng&nbsp;<\/span><br \/>v&igrave; <span class=\"math-tex\">$\\dfrac{58}{23}-\\dfrac{37}{46}-\\dfrac{5}{23}=\\dfrac{116}{46}-\\dfrac{37}{46}-\\dfrac{10}{46}=\\dfrac{116-37-10}{46}=\\dfrac{69}{46}=\\dfrac{3}{2}$<\/span>)&nbsp;<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{58}{23}-\\dfrac{37}{46}-\\dfrac{5}{23}=\\dfrac{3}{2}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-01 23:38:43","option_type":"math","len":0}]}