7x=0.12+4x
问题描述:
7x=0.12+4x
答
唉!厉害回答的那么快
答
先变形。7x-4x=0.12 3x=0.12 x=0.04
答
7x=0.12+4x
移项得
7x-4x=0.12
3x =0.12
x=0.04
答
7X-4X=0.12
3X=0.12
X=0.04