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