How to express y from $\dfrac{y-2x}{y}=1$?

Question

I need to express y from $\dfrac{y-2x}{y}=1$, I mean get the $y=...$ equation. But I'm getting 0 instead of y:

$\dfrac{y-2x}{y}=1$

$y=y-2x$

$y-y=-2x$

$0=-2x$