Solve for k
k=50
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100+5k=350
Swap sides so that all variable terms are on the left hand side.
5k=350-100
Subtract 100 from both sides.
5k=250
Subtract 100 from 350 to get 250.
k=\frac{250}{5}
Divide both sides by 5.
k=50
Divide 250 by 5 to get 50.
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