某种水果10元能买3a千克,照这样计算,欢欢带了50元钱,可以买回这种水果多少千克?
a×12=
b×b=
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=
5a+6a=
a×9=
1×m=
17c-11c=
9x+x=
a×a×5=
2m+5m-3m=
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=