Solve for k
k=13
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9+4k=61
Swap sides so that all variable terms are on the left hand side.
4k=61-9
Subtract 9 from both sides.
4k=52
Subtract 9 from 61 to get 52.
k=\frac{52}{4}
Divide both sides by 4.
k=13
Divide 52 by 4 to get 13.
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