Solve for w
w=5
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20+2w=30
Swap sides so that all variable terms are on the left hand side.
2w=30-20
Subtract 20 from both sides.
2w=10
Subtract 20 from 30 to get 10.
w=\frac{10}{2}
Divide both sides by 2.
w=5
Divide 10 by 2 to get 5.
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