Chapter 5 - Section 5.7 - Properties of Matrices - 5.7 Exercises - Page 553: 1

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

When two matrices are equal to each other, then their corresponding elements are equal. Thus, to find the values of the variables, equate the corresponding elements to obtain: $$a=0; \\ b=4; \\ c=-3;\\ d=5$$