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(7x-31)=63
We move all terms to the left:
(7x-31)-(63)=0
We get rid of parentheses
7x-31-63=0
We add all the numbers together, and all the variables
7x-94=0
We move all terms containing x to the left, all other terms to the right
7x=94
x=94/7
x=13+3/7
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