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X-(.2X)=255.000
We move all terms to the left:
X-(.2X)-(255.000)=0
We add all the numbers together, and all the variables
X-(+.2X)-255=0
We get rid of parentheses
X-.2X-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+0.6/0.8
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