255-x-x=39

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Solution for 255-x-x=39 equation:



255-x-x=39
We move all terms to the left:
255-x-x-(39)=0
We add all the numbers together, and all the variables
-2x+216=0
We move all terms containing x to the left, all other terms to the right
-2x=-216
x=-216/-2
x=+108

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