7-8x=4-6x

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7-8x=4-6x7-8x=4-6x7-8x=4-6x7-8x+8x=4-6x+8x7=4+2x2x=7-42x=3x=3/28x=7-4-6x3-6x=8x3=......2x=3X=3/27-4=

7-8x=4-6x
7-8x=4-6x

7-8x=4-6x
7-8x+8x=4-6x +8x
7=4+2x
2x=7-4
2x=3
x=3/2

8x=7-4-6x
3-6x=8x
3=......

2x=3
X=3/2

7-4=8x-6x
3 =2x
x=3除以2
x=1.5

4-6X-(7-8X)=0
4-6X-7+8X =0
8X-6X-7+4 =0
2X-(7-4) =0
2X-3 =0
2X=3
X=1。5
或者记住:=左边移到右边要变号+变减,减变加
7+6X=4+8X
两边同时减6X
7=4+2X
2X=3
X=1。5