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99=(13x+8)
We move all terms to the left:
99-((13x+8))=0
We calculate terms in parentheses: -((13x+8)), so:We get rid of parentheses
(13x+8)
We get rid of parentheses
13x+8
Back to the equation:
-(13x+8)
-13x-8+99=0
We add all the numbers together, and all the variables
-13x+91=0
We move all terms containing x to the left, all other terms to the right
-13x=-91
x=-91/-13
x=+7
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