Solve for x
x=-\frac{y}{10}+30
Solve for y
y=300-10x
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300-10x=y
Swap sides so that all variable terms are on the left hand side.
-10x=y-300
Subtract 300 from both sides.
\frac{-10x}{-10}=\frac{y-300}{-10}
Divide both sides by -10.
x=\frac{y-300}{-10}
Dividing by -10 undoes the multiplication by -10.
x=-\frac{y}{10}+30
Divide y-300 by -10.
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