五年级解方程5(x-4)-1.2(13-x)=2x+2.2,怎么做

五年级的解方程5(x-4)-1.2(13-x)=2x+2.2,怎么做
2025-04-10 03:41:05
推荐回答(2个)
回答1:

5(x-4)-1.2(13-x)=2x+2.2
5x-20-15.6+1.2x=2x+2.2
5x+1.2x-2x=2.2+20+15.6
4.2x=37.8
x=37.8/4.2
x=9

回答2:

5(x-4)-1.2(13-x)=2x+2.2
5x-20-15.6+1.2x=2x+2.2
4.2x=37.8
x=9