Solve for x
x=\frac{y-13}{10}
Solve for y
y=10x+13
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-10x=13-y
Subtract y from both sides.
\frac{-10x}{-10}=\frac{13-y}{-10}
Divide both sides by -10.
x=\frac{13-y}{-10}
Dividing by -10 undoes the multiplication by -10.
x=\frac{y-13}{10}
Divide 13-y by -10.
y=13+10x
Add 10x to both sides.
Examples
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Limits
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