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-9+w=-3+7w
We move all terms to the left:
-9+w-(-3+7w)=0
We add all the numbers together, and all the variables
w-(7w-3)-9=0
We get rid of parentheses
w-7w+3-9=0
We add all the numbers together, and all the variables
-6w-6=0
We move all terms containing w to the left, all other terms to the right
-6w=6
w=6/-6
w=-1
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