3.5x-2(x+5)=18,x=?

问题描述:

3.5x-2(x+5)=18,x=?

3.5x-2x-10=18
1.5x=28
x=28/1.5
x=56/3

3.5x-2(x+5)=18
3.5x-2x-10=18
1.5x=18+10
1.5x=28
x=28/1.5
=56/3