Solve for x
x=-\frac{y}{4}+50
Solve for y
y=200-4x
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200-4x=y
Swap sides so that all variable terms are on the left hand side.
-4x=y-200
Subtract 200 from both sides.
\frac{-4x}{-4}=\frac{y-200}{-4}
Divide both sides by -4.
x=\frac{y-200}{-4}
Dividing by -4 undoes the multiplication by -4.
x=-\frac{y}{4}+50
Divide y-200 by -4.
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