Solve for n
n=6
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4n-15=9
Swap sides so that all variable terms are on the left hand side.
4n=9+15
Add 15 to both sides.
4n=24
Add 9 and 15 to get 24.
n=\frac{24}{4}
Divide both sides by 4.
n=6
Divide 24 by 4 to get 6.
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