Question

please answer this question. best answer will be marked as brainliest

Answer 1

$\frac{ \frac{1}{a} }{ \frac{1}{a} + \frac{1}{b} } + \frac{ \frac{1}{a} }{ \frac{1}{a} - \frac{1}{b} } = > \frac{ \frac{1}{a} }{ \frac{a + b}{ab} } + \frac{ \frac{1}{a} }{ \frac{b - a}{ab} } \\ = > \frac{b}{a + b} + \frac{b}{b - a} \\ = > \frac{b(b - a) + b(a + b)}{ {b}^{2} - {a}^{2} } \\ = > \frac{ {b}^{2} - ab + ab + {b}^{2} }{ {b}^{2} - {a}^{2} } \\ = > \frac{2 {b}^{2} }{ {b}^{2} - {a}^{2} }$