Question

Dadas as matrizes A = ║1 3 2 ║ B= ║0 1 2║ C = ║0 -1 -3║
                                     ║9 -1 7 ║      ║ 4 -1 3║     ║ -2 4 0║


Determine A -B-C.

Answer 1

1-0-0     3-1-(-1)   2-2-(-3)

9-4-(-2)   -1-(-1)-4   7-3-0

=

1    3     3

7   -4     4