Respuesta :

tonb

Answer:

-19 -4

-9   -1  

Step-by-step explanation:

-3B is the B matrix where each element is multiplied by -3:

-24 -9

-9   0

1/5 A is likewise:

5  5

0  -1

Add them and get:

-19 -4

-9 -1  

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