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3x+3(x-1)=68
We move all terms to the left:
3x+3(x-1)-(68)=0
We multiply parentheses
3x+3x-3-68=0
We add all the numbers together, and all the variables
6x-71=0
We move all terms containing x to the left, all other terms to the right
6x=71
x=71/6
x=11+5/6
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