x-40%x-(40%x-12)=28怎么解

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x-40%x-(40%x-12)=28怎么解x-40%x-(40%x-12)=28怎么解x-40%x-(40%x-12)=28怎么解x-40%x-(40%x-12)=28怎么解x-0.4x-0.4x+

x-40%x-(40%x-12)=28怎么解
x-40%x-(40%x-12)=28怎么解

x-40%x-(40%x-12)=28怎么解
x-40%x-(40%x-12)=28怎么解
x-0.4x-0.4x+12=28
(1-0.4-0.4)x=28-12
0.2x=16
x=16÷0.2
x=80