Question

dada as matrizes;a=(-3 19) e b=(9 -1),calcule ;a-b

Answer 1

(-3,19)    -   ( 9,  -1)
a1,a2           b1,b2

(a1-b1,a2-b2)

(-3-9)= 12
(19-(-1)=20

A-B = (12,20)