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-8w+3(w-2)=9
We move all terms to the left:
-8w+3(w-2)-(9)=0
We multiply parentheses
-8w+3w-6-9=0
We add all the numbers together, and all the variables
-5w-15=0
We move all terms containing w to the left, all other terms to the right
-5w=15
w=15/-5
w=-3
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