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-13=-5w+2(w-2)
We move all terms to the left:
-13-(-5w+2(w-2))=0
We calculate terms in parentheses: -(-5w+2(w-2)), so:We get rid of parentheses
-5w+2(w-2)
We multiply parentheses
-5w+2w-4
We add all the numbers together, and all the variables
-3w-4
Back to the equation:
-(-3w-4)
3w+4-13=0
We add all the numbers together, and all the variables
3w-9=0
We move all terms containing w to the left, all other terms to the right
3w=9
w=9/3
w=3
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