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.2x-x=255
We move all terms to the left:
.2x-x-(255)=0
We add all the numbers together, and all the variables
-0.8x-255=0
We move all terms containing x to the left, all other terms to the right
-0.8x=255
x=255/-0.8
x=-318+0.59999999999999/0.8
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