Question

solve kardo yaar.. ... ..!!​

Answer 1

$({( { \frac{1}{3} })^{ - 1} - { (\frac{1}{4} })^{ - 1} })^{ - 1} \\ \\ = ( { \frac{1}{ \frac{1}{3} } - \frac{1}{ \frac{1}{4} } })^{ - 1} \\ \\ = ( {3 - 4})^{ - 1} \\ \\ = ( { - 1})^{ - 1} \\ \\ = \frac{1}{ - 1} \\ \\ = - 1$