Solve for c
c=-\frac{n}{2}+65
Solve for n
n=130-2c
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n+2c=130
Swap sides so that all variable terms are on the left hand side.
2c=130-n
Subtract n from both sides.
\frac{2c}{2}=\frac{130-n}{2}
Divide both sides by 2.
c=\frac{130-n}{2}
Dividing by 2 undoes the multiplication by 2.
c=-\frac{n}{2}+65
Divide 130-n by 2.
n+2c=130
Swap sides so that all variable terms are on the left hand side.
n=130-2c
Subtract 2c from both sides.
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