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13x-6=5(2x+6)
We move all terms to the left:
13x-6-(5(2x+6))=0
We calculate terms in parentheses: -(5(2x+6)), so:We get rid of parentheses
5(2x+6)
We multiply parentheses
10x+30
Back to the equation:
-(10x+30)
13x-10x-30-6=0
We add all the numbers together, and all the variables
3x-36=0
We move all terms containing x to the left, all other terms to the right
3x=36
x=36/3
x=12
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