Chapter 9 - Systems and Matrices - 9.7 Properties of Matrices - 9.7 Exercises - Page 929: 13

$a=0$ $b=4$ $c=-3$ $d=5$

Two matrices are equal if they have the same dimension and if corresponding elements, position by position, are equal. --- These matrices have the same dimension, 2$\times$2. Position by position, $c=-3$ $a=0$ $b=4$ $d=5$