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