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13=-8w+5(w+2)
We move all terms to the left:
13-(-8w+5(w+2))=0
We calculate terms in parentheses: -(-8w+5(w+2)), so:We get rid of parentheses
-8w+5(w+2)
We multiply parentheses
-8w+5w+10
We add all the numbers together, and all the variables
-3w+10
Back to the equation:
-(-3w+10)
3w-10+13=0
We add all the numbers together, and all the variables
3w+3=0
We move all terms containing w to the left, all other terms to the right
3w=-3
w=-3/3
w=-1
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