(10+2)(x-3)=10x怎么算
问题描述：
(10+2)(x-3)=10x怎么算
答
额
答
12(x-3)=10x
12x-12*3=10x
12x-10x=36
2x=36
x=36÷2
x=18
答
(10+2)(x-3)=10x
10x-30+2x-6=10x
12x-36=10x
12x-10x=36
2x=36
x=18
给分啊