2【3/4x-(2/3x-1/5)】=1/4x
3/4x-(2/3x-1/5)=1/8x
3/4x-2/3x+1/5=1/8x
1/12x+1/5=1/8x
1/24x=1/5
x=24/5
x=4.8
两边除以2
3/4x-2/3x+1/5=1/8x
1/8x-3/4x+2/3x=1/5
1/24x=1/5
x=1/5÷1/24
x=24/5
2【3/4x-(2/3x-1/5)】=1/4x
3x/2-4x/3+2/5=x/4
18x/12-16x/12-3x/12=-2/5
-x/12=-2/5
x=24/5
2(3/4x-(2/3x-1/5))=1/4x
8(3/4x-(2/3x-1/5))=x
6x-16/3x+8/5=x
90x-80x+24=15x
5x=24
x=24/5
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