Lớp 7 - Kiểm tra tháng 3

[{"l":2,"n":4,"ds":[[7,8,10,12],[9,6,6,6]],"q":0},{"l":1,"ds":[157,154,151,152,157,157,154,152]},{"n":8,"t":1},{"a":[-4,3,7],"t":0,"x":[3,5]},{"x":5,"v":["\\frac{13}{3}","\\frac{9}{5}"],"t":14},{"a":[[1,2,3],[3,3,0]],"v":[[-1,2],[-2,1]],"m":1},{"a":[0,1,3],"v":[[3,5],[1,5]]},{"x":[[2,0,0],[2,0,0],[0,2,0],[0,2,0]],"v":[[-1,2],[-7,1],[2,1],[4,1]],"l":[3,2,1],"b":[0,0,0],"a1":0,"a2":1},{"na":0,"a":16,"b":12,"c":7,"t":0,"h":2,"gt":1},[5,2,1]]

["9","154,25","q-u","-20",[1],"18","\\frac{4}{5}yz^3","0","20","20;21"]