x - 2y +3z = 0 dan y = 1 dan x + 5z = 8

System of Three Linear Equations.

x - 2y + 3z = 0
x - 2(1) + 3z = 0
x + 3z = 2

x + 3z = 2
x + 5z = 8
-------------- -
-2z = -6 → z = 3
x + 3(3) = 2 → x = -4
HP = {(x, y, z)}
      = {(-4, 1, 3)}