Question

By what number should (-5)^-1 be multiplied so that the product becomes (-20) ^-1

Answer 1

Step-by-step explanation:

let x be multiplied

ATQ =>

(-5)^(-1) × x = (-20)^(-1)

$- \frac{1}{5} \times x = - \frac{1}{20} \\ x = \frac{1}{20} \times 5 \\ x = \frac{1}{4} = {4}^{ - 1}$