spltp tolong jawab makasih

SPLTV

x + y + z = -2
x + y = 0
x - 3z = 7


Dr pers. 2
x = - y

-y + y + z = -2
z = -2


....
x - 3(-2) = 7
x + 6 = 7
x = 1

1 = -y
y = -1

Hp = { ( 1 , - 1 , - 2) }