{"save":1,"level":1,"time":"45","total":20,"point":5,"segment":[{"id":"2222","test_id":"377","question":"<p>Li\u1ec7t k&ecirc; c&aacute;c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p sau theo th\u1ee9 t\u1ef1 t\u0103ng d\u1ea7n:<\/p><p>N = {x&nbsp;<span class=\"math-tex\">$\\in \\mathbb{Z}$<\/span>&nbsp;| x c&oacute; t\u1eadn c&ugrave;ng l&agrave; 5 v&agrave; -15&nbsp;&lt; x &lt; 56}<\/p>","options":["<strong>A.<\/strong> N = {-5 ; 15 ; 25 ; 35 ; 45 ; 55}","<strong>B. <\/strong>N = {-5 ; 15 ; 25 ; 35 ; 45}","<strong>C.<\/strong> N = {-15 ; 5 ; 15 ; 25 ; 35 ; 45 ; 55}","<strong>D.<\/strong> N = {-15 ; 5 ; 15 ; 25 ; 35 ; 45}"],"correct":"1","answer":"<p>V&igrave;&nbsp; N = {x&nbsp;<span class=\"math-tex\">$\\in \\mathbb{Z}$<\/span>&nbsp;| x c&oacute; t\u1eadn c&ugrave;ng l&agrave; 5 v&agrave; -15&nbsp;&lt; x &lt; 56}&nbsp; n&ecirc;n&nbsp; N = {-5 ; 15 ; 25 ; 35 ; 45 ; 55}<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong> <strong>N = {-5 ; 15 ; 25 ; 35 ; 45 ; 55}<\/strong><\/span><\/p>","type":"choose","user_id":"132","test":"2","date":"2021-09-27 13:29:58"},{"id":"2224","test_id":"377","question":"<p>T&igrave;m x bi\u1ebft:<\/p><p>-5x + 45 = 26 - 11<\/p>","options":["x = -6","x = 6"],"correct":"2","answer":"<p>-5x + 45 = 26 - 11<\/p><p>-5x + 45 = 15<\/p><p>-5x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 15 - 45<\/p><p>-5x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= -30<\/p><p>&nbsp; &nbsp;x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= (-30) : (-5)<\/p><p>&nbsp; &nbsp;x&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 6<\/p><p>V\u1eady&nbsp; <span style=\"color:#16a085;\"><strong>x = 6<\/strong><\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\"><strong>x = 6<\/strong><\/span><\/p>","type":"choose","user_id":"132","test":"1","date":"2021-09-27 13:48:34"}]}