Solve for X
X=160-2Y
Solve for Y
Y=-\frac{X}{2}+80
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2X=320-4Y
Subtract 4Y from both sides.
\frac{2X}{2}=\frac{320-4Y}{2}
Divide both sides by 2.
X=\frac{320-4Y}{2}
Dividing by 2 undoes the multiplication by 2.
X=160-2Y
Divide 320-4Y by 2.
4Y=320-2X
Subtract 2X from both sides.
\frac{4Y}{4}=\frac{320-2X}{4}
Divide both sides by 4.
Y=\frac{320-2X}{4}
Dividing by 4 undoes the multiplication by 4.
Y=-\frac{X}{2}+80
Divide 320-2X by 4.
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