Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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{"common":{"save":0,"post_id":"5791","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8120","post_id":"5791","mon_id":"1158532","chapter_id":"1158659","question":"<p>T\u1eeb t\u1ec9 l\u1ec7 th\u1ee9c <span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}$<\/span> suy ra \u0111\u01b0\u1ee3c:<\/p><p>(gi\u1ea3 thi\u1ebft các t\u1ec9 s\u1ed1 \u0111\u1ec1u có ngh\u0129a)<\/p>","options":["<strong>A. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a.c}{b.d}$<\/span> ","<strong>B. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a+c}{b+d}$<\/span>","<strong>C. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a-c}{b+d}$<\/span>","<strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a+c}{b-d}$<\/span>"],"correct":"2","level":"1","hint":"","answer":"<p>T\u1eeb t\u1ec9 l\u1ec7 th\u1ee9c <span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}$<\/span> (gi\u1ea3 thi\u1ebft các t\u1ec9 s\u1ed1 \u0111\u1ec1u có ngh\u0129a), ta l\u1ea5y t\u1eed <strong>c\u1ed9ng<\/strong> v\u1edbi t\u1eed, m\u1eabu <strong>c\u1ed9ng<\/strong> v\u1edbi m\u1eabu thì \u0111\u01b0\u1ee3c dãy t\u1ec9 s\u1ed1 b\u1eb1ng nhau.<\/p><p><span style=\"color:#16a085;\"><\/span>\u0110áp án \u0111úng là:<span style=\"color:#16a085;\"><strong> B. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a+c}{b+d}$<\/span> <\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2022-05-26 02:56:01","option_type":"math","len":0},{"id":"8121","post_id":"5791","mon_id":"1158532","chapter_id":"1158659","question":"<p>T\u1eeb t\u1ec9 l\u1ec7 th\u1ee9c <span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}$<\/span> suy ra \u0111\u01b0\u1ee3c:<\/p><p>(gi\u1ea3 thi\u1ebft các t\u1ec9 s\u1ed1 \u0111\u1ec1u có ngh\u0129a)<\/p>","options":["<strong>A. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a.c}{b.d}$<\/span>","<strong>B. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a+c}{b-d}$<\/span>","<strong>C. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a-c}{b+d}$<\/span> ","<strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a-c}{b-d}$<\/span>"],"correct":"4","level":"1","hint":"","answer":"<p>T\u1eeb t\u1ec9 l\u1ec7 th\u1ee9c <span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}$<\/span> , (gi\u1ea3 thi\u1ebft các t\u1ec9 s\u1ed1 \u0111\u1ec1u có ngh\u0129a), ta l\u1ea5y t\u1eed tr\u1eeb \u0111i t\u1eed, m\u1eabu tr\u1eeb \u0111i m\u1eabu thì \u0111\u01b0\u1ee3c dãy t\u1ec9 s\u1ed1 b\u1eb1ng nhau.<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}=\\dfrac{a-c}{b-d}$<\/span> <\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2022-05-26 02:56:52","option_type":"math","len":0},{"id":"8123","post_id":"5791","mon_id":"1158532","chapter_id":"1158659","question":"<p>T\u1eeb t\u1ec9 l\u1ec7 th\u1ee9c <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}$<\/span> suy ra \u0111\u01b0\u1ee3c:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}=\\dfrac{m+n}{5}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}=\\dfrac{m+n}{6}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}=\\dfrac{m-n}{5}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}=\\dfrac{m.n}{5}$<\/span>"],"correct":"1","level":"1","hint":"","answer":"<p>Áp d\u1ee5ng tính ch\u1ea5t c\u1ee7a dãy t\u1ec9 s\u1ed1 b\u1eb1ng nhau, t\u1eeb t\u1ec9 l\u1ec7 th\u1ee9c <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}$<\/span> <\/p><p>suy ra <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}=\\dfrac{m+n}{2+3}=\\dfrac{m+n}{5}$<\/span><\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{m}{2}=\\dfrac{n}{3}=\\dfrac{m+n}{5}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2022-05-26 03:05:22","option_type":"math","len":0}]}