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-2w+8=-4(w-5)
We move all terms to the left:
-2w+8-(-4(w-5))=0
We calculate terms in parentheses: -(-4(w-5)), so:We get rid of parentheses
-4(w-5)
We multiply parentheses
-4w+20
Back to the equation:
-(-4w+20)
-2w+4w-20+8=0
We add all the numbers together, and all the variables
2w-12=0
We move all terms containing w to the left, all other terms to the right
2w=12
w=12/2
w=6
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