Lớp 9 - Kiểm tra tháng 4

[{"a":9,"b":10},[-7,28],{"a":11,"b":2,"c":40,"rnd":3},{"ty":7,"x":4,"n":5.5,"l":44},[-4,5,3,-2],{"w":[3,12,8],"t":2},[1,-1,-20],{"c":2,"d":"m","a":11,"b":19},{"c":15,"a":2,"b":"hòn bi sắt","d":14.5},{"c":0,"d":"dm","a":14,"b":18}]

[{"ans1":"19","ans2":"90"},"0;4","40",["9,5"],"m\/\\ge\\frac{7}{48}","\\frac{32}{3}","-4;5",{"ans":"660"},"21,75",{"ans":"504"}]