2.5(X一8)=3X怎么做?
问题描述:
2.5(X一8)=3X怎么做?
答
5x-40=3x
5x-3x=40
2x=40
x=20
2.5(X一8)=3X怎么做?
5x-40=3x
5x-3x=40
2x=40
x=20