Solve for n
n=\frac{P-3}{4}
Solve for P
P=4n+3
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4n+3=P
Swap sides so that all variable terms are on the left hand side.
4n=P-3
Subtract 3 from both sides.
\frac{4n}{4}=\frac{P-3}{4}
Divide both sides by 4.
n=\frac{P-3}{4}
Dividing by 4 undoes the multiplication by 4.
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Limits
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