1X/4+(180-X)=6/5(180-X)怎么解

问题描述:

1X/4+(180-X)=6/5(180-X)怎么解

1X/4+(180-X)=6/5(180-X)
乘以20得 5x+20(180-x)=24(180-x)
5x=4(180-x)
5x=720-4x
9x=720
x=80