Solve for x
x=-\frac{9y}{5}+18
Solve for y
y=-\frac{5x}{9}+10
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5x=90-9y
The equation is in standard form.
\frac{5x}{5}=\frac{90-9y}{5}
Divide both sides by 5.
x=\frac{90-9y}{5}
Dividing by 5 undoes the multiplication by 5.
x=-\frac{9y}{5}+18
Divide 90-9y by 5.
90-9y=5x
Swap sides so that all variable terms are on the left hand side.
-9y=5x-90
Subtract 90 from both sides.
\frac{-9y}{-9}=\frac{5x-90}{-9}
Divide both sides by -9.
y=\frac{5x-90}{-9}
Dividing by -9 undoes the multiplication by -9.
y=-\frac{5x}{9}+10
Divide -90+5x by -9.
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Limits
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