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90=(7x+1)
We move all terms to the left:
90-((7x+1))=0
We calculate terms in parentheses: -((7x+1)), so:We get rid of parentheses
(7x+1)
We get rid of parentheses
7x+1
Back to the equation:
-(7x+1)
-7x-1+90=0
We add all the numbers together, and all the variables
-7x+89=0
We move all terms containing x to the left, all other terms to the right
-7x=-89
x=-89/-7
x=12+5/7
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