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-3(2x+8)+2x=12
We move all terms to the left:
-3(2x+8)+2x-(12)=0
We add all the numbers together, and all the variables
2x-3(2x+8)-12=0
We multiply parentheses
2x-6x-24-12=0
We add all the numbers together, and all the variables
-4x-36=0
We move all terms containing x to the left, all other terms to the right
-4x=36
x=36/-4
x=-9
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