7x-9/2x=2.5*3-5
问题描述:
7x-9/2x=2.5*3-5
答
7x-9/2x=2.5*3-5
5/2x=2.5
x=1
7x-9/2x=2.5*3-5
7x-9/2x=2.5*3-5
5/2x=2.5
x=1