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6x-9=2(2x-8)
We move all terms to the left:
6x-9-(2(2x-8))=0
We calculate terms in parentheses: -(2(2x-8)), so:We get rid of parentheses
2(2x-8)
We multiply parentheses
4x-16
Back to the equation:
-(4x-16)
6x-4x+16-9=0
We add all the numbers together, and all the variables
2x+7=0
We move all terms containing x to the left, all other terms to the right
2x=-7
x=-7/2
x=-3+1/2
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