OK, so im pretty sure this is really ez except im kinda confusioned rn.
\(Simplify: \frac{(\frac{1}{y}-\frac{1}{x})}{\frac{1}{y}+\frac{1}{x}} \)
\(\frac{(\frac{1}{y} - \frac{1}{x})}{\frac{1}{y} + \frac{1}{x}}\)
\(= \frac{\frac{x - y}{xy}}{\frac{x+y}{xy}}\)
\(= \frac{x-y}{x+y}\)
I think this is right..