Question

What is the multiplicative of p/q​

Answer 1

If you're saying multiplicative inverse, of $\frac{p}{q}$ is $\frac{q}{p}$.

Answer 2

Hence, q/p is the multiplicative inverse of fraction p/q. Examples: Mul. Inverse of 2/7 is 7/2: 2/7 x 7/2 = 1.