Question

please solve this question​

Answer 1

$\bold{ \huge {\underline {\mathfrak{Hello! }}}}$

${ ({x}^{ - 1} + {y}^{ - 1} ) }^{ - 1}$

$\longrightarrow \: { (\frac{1}{x} + \frac{1}{y} )}^{ - 1}$

$\longrightarrow {( \frac{ x + y}{xy}) }^{ - 1}$

$\longrightarrow \bold{ \boxed {\mathtt{ \frac{xy}{x + y} }}}$