y=2-5x/1+x 怎么化成x=2-y/y+5
问题描述:
y=2-5x/1+x 怎么化成x=2-y/y+5
答
y(1+x)=2-5x
y+yx=2-5x
(y+5)x=2-y
x=2-y/y+5