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3(2x-2)=81
We move all terms to the left:
3(2x-2)-(81)=0
We multiply parentheses
6x-6-81=0
We add all the numbers together, and all the variables
6x-87=0
We move all terms containing x to the left, all other terms to the right
6x=87
x=87/6
x=14+1/2
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