The value of (3^(-1) + 4^(-1) ÷ 5^(-1) is A. 7/10 B. 60/7 C. 7/5 D. 7/15

Question

The value of \((3^{-1}+4^{-1})\div5^{-1}\) is

A. 7/10

B. 60/7

C. 7/5

D. 7/15

Answer 1

\((3^{-1}+4^{-1})^{-1}\div5^{-1}=(\frac{1}{3}+\frac{1}{4})^{-1}\div\frac{1}{5}\)