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9x=-2(x+7)
We move all terms to the left:
9x-(-2(x+7))=0
We calculate terms in parentheses: -(-2(x+7)), so:We get rid of parentheses
-2(x+7)
We multiply parentheses
-2x-14
Back to the equation:
-(-2x-14)
9x+2x+14=0
We add all the numbers together, and all the variables
11x+14=0
We move all terms containing x to the left, all other terms to the right
11x=-14
x=-14/11
x=-1+3/11
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