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8w-7w=3w+13
We move all terms to the left:
8w-7w-(3w+13)=0
We add all the numbers together, and all the variables
w-(3w+13)=0
We get rid of parentheses
w-3w-13=0
We add all the numbers together, and all the variables
-2w-13=0
We move all terms containing w to the left, all other terms to the right
-2w=13
w=13/-2
w=-6+1/2
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