Question

Calcule x, y, z e t, sabendo que:

[x 1] + [2 y] = [3 2]
[ 1 2] [0 -1] [z t]

Answer 1

Vamos lá

x + 2 = 3.  x = 1

1 + y = 2, y = 1

1 + 0 = z, z = 1

2 - 1 = t,  t = 1