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7x-8=(10x+7)
We move all terms to the left:
7x-8-((10x+7))=0
We calculate terms in parentheses: -((10x+7)), so:We get rid of parentheses
(10x+7)
We get rid of parentheses
10x+7
Back to the equation:
-(10x+7)
7x-10x-7-8=0
We add all the numbers together, and all the variables
-3x-15=0
We move all terms containing x to the left, all other terms to the right
-3x=15
x=15/-3
x=-5
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