Lớp 9 - Kiểm tra tháng 4

[{"a":3,"b":18},[7,-21],{"a":13,"b":2,"c":38,"rnd":3},{"ty":4,"d":26,"r":24,"d1":3,"r1":2},[-3,2,3,1],{"w":[-2,7,-3],"t":5},[-1,-2,8],{"c":0,"d":"dm","a":2,"b":13},{"c":7,"a":3,"b":"thanh sắt","d":6.3},{"c":1,"d":"cm","a":25,"b":8}]

[{"ans1":"21","ans2":"54"},"0;3","38",["26","24"],"m\/\\ge\\frac{-4}{9}","\\frac{7}{3}","2;-4",{"ans":"52"},"4,41",{"ans":"200"}]