Lớp 9 - Kiểm tra tháng 4

[{"a":15,"b":23},[-7,-14],{"a":26,"b":4,"c":49,"rnd":0},{"ty":7,"x":4,"n":5,"l":40},[3,3,-4,2],{"w":[-3,-7,7],"t":4},[1,-2,-15],{"c":1,"d":"cm","a":2,"b":18},{"c":11.5,"a":0,"b":"tượng đá","d":13.8},{"c":1,"d":"cm","a":15,"b":23}]

[{"ans1":"38","ans2":"345"},"0;-2","49",["9"],"m\/\\ge\\frac{77}{48}","-\\frac{784}{27}","5;-3",{"ans":"80"},"15.87",{"ans":"345"}]