Question

To find the letters

Answer 1

Answer:1, -1,3,-7

Explanation:

Answer 2

For this case we must subtract the given matrices and find the values of a, b, c and d:

Subtracting term from term we have:
`a = 5-4 = 1\\b = 2-1 = 1`

We have that different signs are subtracted and the sign of the major is placed.

`c = 3-6 = -3\\d = 0-7 = -7`

Answer:

`a = 1\\b = 1\\c = -3\\d = -7`