Question

(3^-1+4^-1+5^-1)^-1
please answer it​

Answer 1

Answer:

0.75

Explanation:

(3^-1+4^-1+5^-1)^-1(open bracket)

=(0.3 + 0.25 + 0.2)1

=(0.75)1

o.75

Answer 2

Answer:

Explanation:

$(3^-1+4^-1+5^-1)^-1\\=(\frac{1}{3}+\frac{1}{4}+\frac{1}{5})^{-1} \\=(\frac{20+15+12}{60}) ^{-1}\\=(\frac{47}{60}) ^{-1}\\=\frac{60}{47}\\=1\frac{13}{47}$