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