Question

simply the following ​

Answer 1

Answer:

$({8}^{ - 1} - {5}^{ - 1} ) ^{ - 1 } \\ = (\frac{1}{8} - \frac{1}{5} ) ^{ - 1 } \\ = ( \frac{5 - 8}{40} ) ^{ - 1} \\ =( - \frac{3}{40} ) ^{ - 1} \\ = - \frac{40}{3} ans$

Answer 2

Answer:

Let's discuss the concept first....

If we are given a number as 8^(-1) then we can write it as...

1/8

Now after Clearing the concept let's go to ur question....

[ 8^(-1) - 5^(-1) ] ^(-1)

Now we can write 8^(-1) as 1/8 and 5^(-1)...

Let's do that...!!

= [ 1/8 - 1/5 ] ^ (-1)

Taking LCM...

= [ (5 - 8)/40 ] ^ (-1)

= [ -3/40 ] ^ (-1)

Now we can write the fraction -3/40 as -40/3

= - 40/3

= - 13.33