Question

by what number should (-1/5)^-1 be multiplied so that the product may be equal to (1/5)^-3?

Answer 1

Answer:

let the number be x..

then, -5 × x = 5^3

=> x = 5^3 /-5

=> x = -5^2

=> x = - 25....

So, the number is -25...