Solve for x
x=-\frac{y}{10}+5
Solve for y
y=50-10x
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20x=100-2y
Subtract 2y from both sides.
\frac{20x}{20}=\frac{100-2y}{20}
Divide both sides by 20.
x=\frac{100-2y}{20}
Dividing by 20 undoes the multiplication by 20.
x=-\frac{y}{10}+5
Divide 100-2y by 20.
2y=100-20x
Subtract 20x from both sides.
\frac{2y}{2}=\frac{100-20x}{2}
Divide both sides by 2.
y=\frac{100-20x}{2}
Dividing by 2 undoes the multiplication by 2.
y=50-10x
Divide 100-20x by 2.
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