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-7(x-6)=5x-42
We move all terms to the left:
-7(x-6)-(5x-42)=0
We multiply parentheses
-7x-(5x-42)+42=0
We get rid of parentheses
-7x-5x+42+42=0
We add all the numbers together, and all the variables
-12x+84=0
We move all terms containing x to the left, all other terms to the right
-12x=-84
x=-84/-12
x=+7
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