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(8x-31)+81=180
We move all terms to the left:
(8x-31)+81-(180)=0
We add all the numbers together, and all the variables
(8x-31)-99=0
We get rid of parentheses
8x-31-99=0
We add all the numbers together, and all the variables
8x-130=0
We move all terms containing x to the left, all other terms to the right
8x=130
x=130/8
x=16+1/4
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