Solve for x
x=2\left(y-110\right)
Solve for y
y=\frac{x+220}{2}
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x=2y-180-40
Subtract 40 from both sides.
x=2y-220
Subtract 40 from -180 to get -220.
2y-180=x+40
Swap sides so that all variable terms are on the left hand side.
2y=x+40+180
Add 180 to both sides.
2y=x+220
Add 40 and 180 to get 220.
\frac{2y}{2}=\frac{x+220}{2}
Divide both sides by 2.
y=\frac{x+220}{2}
Dividing by 2 undoes the multiplication by 2.
y=\frac{x}{2}+110
Divide x+220 by 2.
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