Simplify: \ac2x−\ac1y\ac{2}{x} - \ac{1}{y}\ac2x−\ac1y.
\ac2y−xxy\ac{2y - x}{xy}\ac2y−xxy
\ac1x−y\ac{1}{x-y}\ac1x−y
\acy−2xxy\ac{y - 2x}{xy}\acy−2xxy
\ac2−1x−y\ac{2-1}{x-y}\ac2−1x−y