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768=6(-11x+7)
We move all terms to the left:
768-(6(-11x+7))=0
We calculate terms in parentheses: -(6(-11x+7)), so:We get rid of parentheses
6(-11x+7)
We multiply parentheses
-66x+42
Back to the equation:
-(-66x+42)
66x-42+768=0
We add all the numbers together, and all the variables
66x+726=0
We move all terms containing x to the left, all other terms to the right
66x=-726
x=-726/66
x=-11
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