Solve for x
x=\frac{y-2\sqrt{5}}{2}
Solve for y
y=2\left(x+\sqrt{5}\right)
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2x+2\sqrt{5}=y
Swap sides so that all variable terms are on the left hand side.
2x=y-2\sqrt{5}
Subtract 2\sqrt{5} from both sides.
\frac{2x}{2}=\frac{y-2\sqrt{5}}{2}
Divide both sides by 2.
x=\frac{y-2\sqrt{5}}{2}
Dividing by 2 undoes the multiplication by 2.
x=\frac{y}{2}-\sqrt{5}
Divide y-2\sqrt{5} by 2.
Examples
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