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81=12x-17
We move all terms to the left:
81-(12x-17)=0
We get rid of parentheses
-12x+17+81=0
We add all the numbers together, and all the variables
-12x+98=0
We move all terms containing x to the left, all other terms to the right
-12x=-98
x=-98/-12
x=8+1/6
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