Question

find the value (1/5) -¹ +(1/7) -¹ +(1/8) -¹​

Answer 1

Answer:

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Right Question⤵

Find the value of ${ \frac{1}{5} }^{ - 1} + { \frac{1}{7} }^{ - 1} + { \frac{1}{8} }^{ - 1}$

Solution⤵

${ \frac{1}{5} }^{ - 1} = {(5)}^{1}$

${ \frac{1}{7} }^{ - 1} = {(7)}^{1}$

${ \frac{1}{8} }^{ - 1} = {(8)}^{1}$

$= 5 + 7 + 8$

$= 20$

$\therefore$ The answer is 20.

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