tentukan nilai x, y, z pada persamaan berikut: x + 2y =-4 2x + z = 5 y - 3z = -6

[tex]$x=2,\:y=-3,\:z=1$[/tex]

x=-4-2y; 2(-4-2y)+z=5⇒-8-4y+z=5; z=13+4y
y-3(13+4y)=-6; y-39-12y=-6; -11y=33; y=-3
3-3z=-6; -3z=-9; z=3
x+2(-3)=-4; x-6=-4; x=2