Vamos là.
matriz A
(0 7 4)
(-6 3 y)
(5 1 2)
matriz At
(0 -6 5)
(7 3 1)
(4 y 2)
B = At
(0 -6 5) (0 -6 5)
(x 3 1) (7 3 1)
(4 8 z) (4 y 2)
x = 7, y = 8, z = 2
