Question

{(2/5)^-1 + (3/4)^-2}^-1​

Answer 1

Answer:

({2/5)^-1 + (3/4)^-2}^-1

((5/2) + (4/3)²)^-1

= (5/2 + 16/9)^-1

$( \frac{45 + 32}{18} ) {}^{ - 1}$

$= ( \frac{77}{18} ) {}^{ - 1}$

$= \frac{18}{77}$