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728=8(-7x-14)
We move all terms to the left:
728-(8(-7x-14))=0
We calculate terms in parentheses: -(8(-7x-14)), so:We get rid of parentheses
8(-7x-14)
We multiply parentheses
-56x-112
Back to the equation:
-(-56x-112)
56x+112+728=0
We add all the numbers together, and all the variables
56x+840=0
We move all terms containing x to the left, all other terms to the right
56x=-840
x=-840/56
x=-15
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