Tentukan Hp dari x + y + z = 0 2x + y + z = 7 x + 2y + z = 8 Mohon bantuan nya yah

x + y + z = 0 ..........(1)
2x + y + z = 7...........(2)
x + 2y + z = 8...........(3)

eliminasi (1) dan (2)
x + y + z = 0
2x + y + z = 7
-------------------- --
- x = -7
x = 7


eliminasi (2) dan (3)
2x + y + z = 7
x + 2y + z = 8
-------------------- --
x - y = -1

x = 7 substitusi ke x - y = - 1
7 - y = -1
- y = - 1 - 7
- y = - 8
y = 8

x = 7, y = 8 substitusi ke x + y + z =0
7 + 8 + z = 0
15 + z = 0
z = - 15

jadi (x,y,z) = (7, 8, -15)