Question

please tell the answer step by step​

Answer 1

$\large \green{ \fcolorbox{grey}{white}{ ☑ \: \textbf{Verified \: answer}}}$

(Anything)⁰ = 1

So

(3⁻¹ + 4⁻¹ + 5⁻¹)⁰ = 1

Answer 2

$anything \: to \: the \: power \: 0 \: is \: 1. \\ hence \: {( {3}^{ - 1} + {4}^{ - 1} + {5}^{ - 1} )}^{0} = 1$

Hope the answer helped you out!