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-3(2x+4)=68
We move all terms to the left:
-3(2x+4)-(68)=0
We multiply parentheses
-6x-12-68=0
We add all the numbers together, and all the variables
-6x-80=0
We move all terms containing x to the left, all other terms to the right
-6x=80
x=80/-6
x=-13+1/3
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