4x÷5+396=8X÷9 快

问题描述:

4x÷5+396=8X÷9

4x÷5+396=8X÷9
4x/5+396=8x/9
4x/5-8x/9=-396
36x/45-40x/45=-396
-4x/45=-396
x=-396*(-45/4)
x=4455

4x÷5+396=8X÷9
4*9X+396*45=8X*5
4X=396*45
X=4455