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-42=3(x-6)
We move all terms to the left:
-42-(3(x-6))=0
We calculate terms in parentheses: -(3(x-6)), so:We get rid of parentheses
3(x-6)
We multiply parentheses
3x-18
Back to the equation:
-(3x-18)
-3x+18-42=0
We add all the numbers together, and all the variables
-3x-24=0
We move all terms containing x to the left, all other terms to the right
-3x=24
x=24/-3
x=-8
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