(42-x)/(10-x)=5
问题描述:
(42-x)/(10-x)=5
答
(42-x)/(10-x)=5
42-x=50-5x
4x=8
x=2
(42-x)/(10-x)=5
(42-x)/(10-x)=5
42-x=50-5x
4x=8
x=2