Question

Please solve this as soon as possible.. Please.. ​

Answer 1

Answer:

1

Step-by-step explanation:

$(a^{-1} + b^{-1}) \div (a^{-1} + b^{-1})\\ \\= \left( \dfrac{1}{a} + \dfrac{1}{b} \right) \div \left( \dfrac{1}{a} + \dfrac{1}{b} \right)\\\\\\= \left( \dfrac{b+a}{ab} \right) \div \left( \dfrac{b+a}{ab} \right)\\\\\\= \left( \dfrac{a+b}{ab} \right) \times \left( \dfrac{ab}{a+b} \right)\\\\= \bold{1}$

Answer 2

ur question is solved above