Question

plzz answer my question plzz​

Answer 1

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Case 1 :-

$\sf \implies\bigg( {2}^{ - 1} + {3}^{ - 1} \bigg)^{ - 1}$

$\implies\sf \bigg( \frac{1}{2} + \frac{1}{3}\bigg)^{ - 1}$

$\implies\sf \bigg(\dfrac{3+2}{6} \bigg)^{ - 1}$

$\implies\sf \dfrac{6}{5}$

Case 2 :-

$\implies\sf \bigg( {3}^{ - 1} \times {4}^{ - 1} \bigg)^{ - 1} \times {5}^{ - 1}$

$\implies\sf \bigg( \dfrac{1}{3} \times \dfrac{1}{4}\bigg)^{ - 1} \times \dfrac{1}{5}$

$\implies\sf \bigg( \dfrac{1}{12} \bigg)^{ - 1} \times \dfrac{1}{5}$

$\implies12 \times \dfrac{1}{5}$

$\implies\sf \dfrac{12}{5}$