5a+6a=
a×9=
b×b=
1×m=
17c-11c=
9x+x=
a×a×5=
2m+5m-3m=
a×12=
a×b=
x×y×7=
5×x=
2×c×c=
7x×5=
2×a×b=
a·a=
6×m×7n=
8a×9b×10c=
a×a×a=
5x+8x=
10m-m=
x-0.5x=
5n+7n=
2y-0.7y=
y×6×y=
(a+b)×8=
8-a×5=
n+1.8n=
7a+6a-10=
13.7b+3b=
11+3.6m-2m=
6x-x=
x-0.9x=
10x-x+1.8x=
2a×a=
5b-2b=
x-0.87x=
10b-3.5b-b=
x×3x=
0.9×3= 3.6÷0.6= 50×0.2= 5.4÷0.9=
7.5×8= 1.8x+4.8x= 2.8a-1.9a= 2.4÷1.2=
2.2+5.78= 0.4×300 a-0.7a= 75.9-18.4-1.4=
1.7×20= 1.2÷0.06= 52-32= 5.2b-b-0.2b=
2.5×0.4= 5.7-4.3= b-0.01b= 0.22=
0.26÷0.5= 0.42÷0.06= 5a×4a= 1.3×0.26+0.74×1.3=