Solve for w
w=4
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-5+5w=15
Swap sides so that all variable terms are on the left hand side.
5w=15+5
Add 5 to both sides.
5w=20
Add 15 and 5 to get 20.
w=\frac{20}{5}
Divide both sides by 5.
w=4
Divide 20 by 5 to get 4.
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