Question

Find the multiplicative inverse of the following:
$-1\times \frac{-2}{5}$

Answer 1

We know that multiplicative inverse of a rational number a is $\left(\frac{1}{a}\right),suchthata\times \frac{1}{a}=1$.
Multiplicative inverse of $-1\times \frac{-2}{5}=\frac{2}{5}is\frac{5}{2}$.