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X+81=14X-54
We move all terms to the left:
X+81-(14X-54)=0
We get rid of parentheses
X-14X+54+81=0
We add all the numbers together, and all the variables
-13X+135=0
We move all terms containing X to the left, all other terms to the right
-13X=-135
X=-135/-13
X=10+5/13
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