7x=0.12+4x
问题描述:
7x=0.12+4x
答
7x=0.12+4x
移项得
7x-4x=0.12
3x =0.12
x=0.04
7x=0.12+4x
7x=0.12+4x
移项得
7x-4x=0.12
3x =0.12
x=0.04