(x-7)/(x/4)=3怎么算
问题描述:
(x-7)/(x/4)=3怎么算
答
x-7=3*(x/4)
(x-7)*4=3x
4x-28=3x
x=28
(x-7)/(x/4)=3怎么算
x-7=3*(x/4)
(x-7)*4=3x
4x-28=3x
x=28