Question

1) Resolva o sistema linear:

Answer 1

2t = 10
t = 10/2
t = 5

3z - t = 1
3z - 5 = 1
3z = 1 + 5
3z = 6
z = 6/3
z = 2

y - 3z + 2t = - 4
y - 3.2 + 2.5 = - 4
y - 6 + 10 = - 4
y + 4 = - 4
y = - 4 - 4
y = - 8

x + y + z + t = 0
x +(-8) +2 + 5 = 0
x - 8 + 7 = 0
x - 1 = 0
x = 1