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512=-8(-8+8x)
We move all terms to the left:
512-(-8(-8+8x))=0
We add all the numbers together, and all the variables
-(-8(8x-8))+512=0
We calculate terms in parentheses: -(-8(8x-8)), so:We get rid of parentheses
-8(8x-8)
We multiply parentheses
-64x+64
Back to the equation:
-(-64x+64)
64x-64+512=0
We add all the numbers together, and all the variables
64x+448=0
We move all terms containing x to the left, all other terms to the right
64x=-448
x=-448/64
x=-7
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