(5/4x-10)/(x-8)=5/7
问题描述:
(5/4x-10)/(x-8)=5/7
答
(5/4x-10)/(x-8)=5/7
7(5/4x-10)=5(x-8)
35/4x-70=5x-40
35/4x-5x=70-40
15/4x=30
x=30x4/15
x=8