Chapter 8 - Section 8.4 - Multiplicative Inverses of Matrices and Matrix Equations - Exercise Set - Page 934: 79

The statement does not make sense.

You cannot find the multiplicative inverse of $2\times 3$ matrix as it is a non square matrix. We can find the multiplicative inverse only of square matrix of order $2\times 2\,\,\text{or}\ 3\times 3$ and so on. So, the given statement does not make sense.