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7x-4=2(3x+6)
We move all terms to the left:
7x-4-(2(3x+6))=0
We calculate terms in parentheses: -(2(3x+6)), so:We get rid of parentheses
2(3x+6)
We multiply parentheses
6x+12
Back to the equation:
-(6x+12)
7x-6x-12-4=0
We add all the numbers together, and all the variables
x-16=0
We move all terms containing x to the left, all other terms to the right
x=16
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