Question

answer this question:-

Answer 1

$\frac{a + b + c}{ \frac{1}{a} \times \frac{1}{b} + \frac{1}{b} \times \frac{1}{c} + \frac{1}{c} \times \frac{1}{a} } \\ \\ \frac{a + b + c}{ \frac{1}{ab} + \frac{1}{bc} + \frac{1}{ca} } = \frac{a + b + c}{ \frac{c + a + b}{abc} } \\ \\ \frac{abc(a + b + c)}{a + b + c} = abc$