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-13=-5w+3(w-3)
We move all terms to the left:
-13-(-5w+3(w-3))=0
We calculate terms in parentheses: -(-5w+3(w-3)), so:We get rid of parentheses
-5w+3(w-3)
We multiply parentheses
-5w+3w-9
We add all the numbers together, and all the variables
-2w-9
Back to the equation:
-(-2w-9)
2w+9-13=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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