{"common":{"save":0,"post_id":"7565","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1165","post_id":"7565","mon_id":"1159414","chapter_id":"1159417","question":"<p><span class=\"math-tex\">$\\dfrac{4}{7}+3$<\/span> =<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{7}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{7}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{13}{7}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{22}{7}$<\/span>"],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{7}$<\/span>.<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{4}{7}+3=\\dfrac{4}{7}+\\dfrac{21}{7}=\\dfrac{25}{7}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-18 02:32:26","option_type":"math","len":0},{"id":"1169","post_id":"7565","mon_id":"1159414","chapter_id":"1159417","question":"<p><span class=\"math-tex\">$\\dfrac{19}{35}-\\dfrac{2}{5}$<\/span> = <\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{8}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{5}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{6}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{7}$<\/span>"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{7}$<\/span>.<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{19}{35}-\\dfrac{2}{5}=\\dfrac{19}{35}-\\dfrac{14}{35}=\\dfrac{5}{35}=\\dfrac{5:5}{35:5}=\\dfrac{1}{7}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:15:43","option_type":"math","len":0},{"id":"1170","post_id":"7565","mon_id":"1159414","chapter_id":"1159417","question":"<p><span class=\"math-tex\">$3-\\dfrac{5}{9}$<\/span> = <\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{22}{9}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{21}{9}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{26}{9}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{20}{9}$<\/span>"],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{22}{9}$<\/span>.<\/span><\/p><p><span class=\"math-tex\">$3-\\dfrac{5}{9}=\\dfrac{27}{9}-\\dfrac{5}{9}=\\dfrac{22}{9}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:18:06","option_type":"math","len":0}]}