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-102=-6x+7(x-13)
We move all terms to the left:
-102-(-6x+7(x-13))=0
We calculate terms in parentheses: -(-6x+7(x-13)), so:We get rid of parentheses
-6x+7(x-13)
We multiply parentheses
-6x+7x-91
We add all the numbers together, and all the variables
x-91
Back to the equation:
-(x-91)
-x+91-102=0
We add all the numbers together, and all the variables
-1x-11=0
We move all terms containing x to the left, all other terms to the right
-x=11
x=11/-1
x=-11
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