3.5--6x=2x--8.7的x的值作业急啊·······················································

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3.5--6x=2x--8.7的x的值作业急啊·······················································3.5--6x=2x--8.7的x的值作业急

3.5--6x=2x--8.7的x的值作业急啊·······················································
3.5--6x=2x--8.7的x的值
作业急啊·······················································

3.5--6x=2x--8.7的x的值作业急啊·······················································
3.5--6x=2x--8.7
6x+2x=8.7+3.5
8x=12.2
x=1.525

那是减号吧
8x=12.2
x=1.525

8x=12.2
x=1.525

3.5--6x=2x--8.7
6x-2x=8.7-3.5
4x=5.2
x=1.3

X=1.525

1.525

8x=3.5+8.7
x=12.2/8=61/40