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-12=-3+3w
We move all terms to the left:
-12-(-3+3w)=0
We add all the numbers together, and all the variables
-(3w-3)-12=0
We get rid of parentheses
-3w+3-12=0
We add all the numbers together, and all the variables
-3w-9=0
We move all terms containing w to the left, all other terms to the right
-3w=9
w=9/-3
w=-3
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