Solve for x
x=\frac{9-y}{10}
Solve for y
y=9-10x
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50x=45-5y
Subtract 5y from both sides.
\frac{50x}{50}=\frac{45-5y}{50}
Divide both sides by 50.
x=\frac{45-5y}{50}
Dividing by 50 undoes the multiplication by 50.
x=\frac{9-y}{10}
Divide 45-5y by 50.
5y=45-50x
Subtract 50x from both sides.
\frac{5y}{5}=\frac{45-50x}{5}
Divide both sides by 5.
y=\frac{45-50x}{5}
Dividing by 5 undoes the multiplication by 5.
y=9-10x
Divide 45-50x by 5.
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