x+3\4x=280怎么解.
问题描述:
x+3\4x=280怎么解.
答
x+3\4x=280
7x/4=280
x=280*4/7
x=160
x+3\4x=280怎么解.
x+3\4x=280
7x/4=280
x=280*4/7
x=160