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57x-56=8x+7(7x-8)
We move all terms to the left:
57x-56-(8x+7(7x-8))=0
We calculate terms in parentheses: -(8x+7(7x-8)), so:We get rid of parentheses
8x+7(7x-8)
We multiply parentheses
8x+49x-56
We add all the numbers together, and all the variables
57x-56
Back to the equation:
-(57x-56)
57x-57x+56-56=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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