{"common":{"save":0,"post_id":"4783","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8086","post_id":"4783","mon_id":"1158113","chapter_id":"1158119","question":"<p>So s&aacute;nh M v\u1edbi 0&nbsp;bi\u1ebft<\/p><p>M =&nbsp;<span class=\"math-tex\">$\\dfrac{5}{9}.\\dfrac{-14}{25}.\\dfrac{3}{-7}-\\dfrac{11}{5}$<\/span><\/p>","options":["M &gt; 0","M &lt; 0","M = 0","Kh&ocirc;ng so s&aacute;nh \u0111\u01b0\u1ee3c"],"correct":"2","level":"3","hint":"<p>T&iacute;nh M r\u1ed3i so s&aacute;nh M v\u1edbi 0.<\/p>","answer":"<p>M =&nbsp;<span class=\"math-tex\">$\\dfrac{5}{9}.\\dfrac{-14}{25}.\\dfrac{3}{-7}-\\dfrac{11}{5}$<\/span><\/p><p>M =&nbsp;<span class=\"math-tex\">$\\dfrac{5}{3.3}.\\dfrac{-7.2}{5.5}.\\dfrac{3}{-7}-\\dfrac{11}{5}$<\/span>&nbsp; &nbsp;(r&uacute;t g\u1ecdn cho (-7) . 3 . 5 )<\/p><p>M =&nbsp;<span class=\"math-tex\">$\\dfrac{2}{3.5}-\\dfrac{11}{5}$<\/span><\/p><p>M =&nbsp;<span class=\"math-tex\">$\\dfrac{2}{15}-\\dfrac{11}{5}$<\/span><\/p><p>M =&nbsp;<span class=\"math-tex\">$\\dfrac{2}{15}-\\dfrac{33}{15}$<\/span><\/p><p>M =&nbsp;<span class=\"math-tex\">$\\dfrac{-31}{15}$<\/span>&nbsp;&lt; 0&nbsp; (v&igrave; t\u1eed v&agrave; m\u1eabu l&agrave; hai s\u1ed1 nguy&ecirc;n tr&aacute;i d\u1ea5u)<\/p><p>V\u1eady M &lt;&nbsp;0<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; <span style=\"color:#16a085;\"><strong>M &lt;&nbsp;0<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2021-10-03 01:24:46","option_type":"txt","len":2},{"id":"8088","post_id":"4783","mon_id":"1158113","chapter_id":"1158119","question":"<p>T&igrave;m x bi\u1ebft<\/p><p><span class=\"math-tex\">$\\left( \\dfrac{6}{7}-x \\right):\\left( 4+\\dfrac{1}{14}-\\dfrac{19}{21} \\right)=6$<\/span><\/p>","options":["x = <span class=\"math-tex\">$\\dfrac{127}{7}$<\/span>","x = <span class=\"math-tex\">$-\\dfrac{127}{7}$<\/span>","x = <span class=\"math-tex\">$-\\dfrac{139}{7}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{139}{7}$<\/span>"],"correct":"2","level":"3","hint":"","answer":"<p><span class=\"math-tex\">$\\left( \\dfrac{6}{7}-x \\right):\\left( 4+\\dfrac{1}{14}-\\dfrac{19}{21} \\right)=6$<\/span><\/p><p><span class=\"math-tex\">$\\left( \\dfrac{6}{7}-x \\right):\\left( \\dfrac{168}{42}+\\dfrac{3}{42}-\\dfrac{38}{42} \\right)=6$<\/span><\/p><p><span class=\"math-tex\">$\\left( \\dfrac{6}{7}-x \\right): \\dfrac{133}{42} =6$<\/span><\/p><p><span class=\"math-tex\">$\\left( \\dfrac{6}{7}-x \\right): \\dfrac{19}{6} =6$<\/span><\/p><p><span class=\"math-tex\">$\\left( \\dfrac{6}{7}-x \\right) =6 . \\dfrac{19}{6}$<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{6}{7}-x$<\/span>&nbsp;= 19<\/p><p>&nbsp; &nbsp; -&nbsp; x =&nbsp; 19 -&nbsp;<span class=\"math-tex\">$\\dfrac{6}{7}$<\/span><\/p><p>&nbsp; &nbsp; -&nbsp; x&nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{133}{7}-\\dfrac{6}{7}$<\/span><\/p><p>&nbsp; &nbsp; -&nbsp; x =&nbsp;<span class=\"math-tex\">$\\dfrac{127}{7}$<\/span><\/p><p>&nbsp; &nbsp; &nbsp; &nbsp;x =&nbsp;<span class=\"math-tex\">$-\\dfrac{127}{7}$<\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; <span style=\"color:#16a085;\">x =&nbsp;<span class=\"math-tex\">$-\\dfrac{127}{7}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-03 01:36:53","option_type":"math","len":0},{"id":"8091","post_id":"4783","mon_id":"1158113","chapter_id":"1158119","question":"<p>T&igrave;m x bi\u1ebft<\/p><p><span class=\"math-tex\">$\\dfrac{15}{11}-\\left( x + \\dfrac{35}{2} \\right) .\\dfrac{7}{4}= \\dfrac{1}{11}$<\/span><\/p>","options":["x = <span class=\"math-tex\">$\\dfrac{-369}{22}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{369}{22}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{-401}{22}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{401}{22}$<\/span>"],"correct":"1","level":"3","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{15}{11}-\\left( x + \\dfrac{35}{2} \\right) .\\dfrac{7}{4}= \\dfrac{1}{11}$<\/span><\/p><p><span class=\"math-tex\">$\\left( x + \\dfrac{35}{2} \\right) .\\dfrac{7}{4}=\\dfrac{15}{11} - \\dfrac{1}{11}$<\/span><\/p><p><span class=\"math-tex\">$\\left( x + \\dfrac{35}{2} \\right) .\\dfrac{7}{4}= \\dfrac{14}{11}$<\/span><\/p><p><span class=\"math-tex\">$\\left( x + \\dfrac{35}{2} \\right)= \\dfrac{14}{11} : \\dfrac{7}{4}$<\/span><\/p><p><span class=\"math-tex\">$x + \\dfrac{35}{2}=\\dfrac{14}{11}.\\dfrac{4}{7}$<\/span><\/p><p><span class=\"math-tex\">$x + \\dfrac{35}{2}=\\dfrac{2.4}{11}$<\/span><\/p><p><span class=\"math-tex\">$x +\\dfrac{35}{2}=\\dfrac{8}{11}$<\/span><\/p><p>x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{8}{11}-\\dfrac{35}{2}$<\/span><\/p><p>x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{16}{22}-\\dfrac{385}{22}$<\/span><\/p><p>x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{-369}{22}$<\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\">x =&nbsp;<span class=\"math-tex\">$\\dfrac{-369}{22}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-03 01:45:09","option_type":"math","len":0}]}