Bantu dong pliss....

5x - 8z = 6
5y - 8z = -19
------------------- -
5x - 5y = 25
x - y = 25

x - y = 25 (x2)
3x - 2y = 12 (x1)
-----------------------1
2x - 2y = 50
3x - 2y = 12
------------------------ -
-x = 38
x = -38

x - y = 25
-38 - y = 25
-y = 25 + 38
-y = 63
y = -63

5x - 8z = 6
5(-38) - 8z = 6
-190 - 8z = 6
-8z = 6 + 190
-8z = 196
z = -24 1/2

HP = {-38, -63, -24 1/2}