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-2(w-13)=30
We move all terms to the left:
-2(w-13)-(30)=0
We multiply parentheses
-2w+26-30=0
We add all the numbers together, and all the variables
-2w-4=0
We move all terms containing w to the left, all other terms to the right
-2w=4
w=4/-2
w=-2
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