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8=-8x+5(x+7)
We move all terms to the left:
8-(-8x+5(x+7))=0
We calculate terms in parentheses: -(-8x+5(x+7)), so:We get rid of parentheses
-8x+5(x+7)
We multiply parentheses
-8x+5x+35
We add all the numbers together, and all the variables
-3x+35
Back to the equation:
-(-3x+35)
3x-35+8=0
We add all the numbers together, and all the variables
3x-27=0
We move all terms containing x to the left, all other terms to the right
3x=27
x=27/3
x=9
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