Solve for n
n=-\frac{c}{2}+2
Solve for c
c=4-2n
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2n=4-c
Subtract c from both sides.
\frac{2n}{2}=\frac{4-c}{2}
Divide both sides by 2.
n=\frac{4-c}{2}
Dividing by 2 undoes the multiplication by 2.
n=-\frac{c}{2}+2
Divide 4-c by 2.
c=4-2n
Subtract 2n from both sides.
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