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x -6y-3z=-28.....II
3x+2y+z=16......III
eliminasikan I/III untuk mematikan y
2x-2y-2z=9
3x+2y+z=16
_________ +
5x-z=25......IV
eliminasikan I/II untuk mematikan y
2x-2y-2z=9. (x3)⇒6x-6y-6z=27
x -6y-3z=-28
_________ _
5X-3Z=55 ....v
ELIMINASIKA IV/V untk mematikan x
5x-z=25
5X-3Z=55
_________ _
2z=30
z=30/2
z=15
subtitusikan ke pers IV
5x-z=25
5x-15=25
5x=25+15
5x=40
x=8
subtitudikan ke pers I
2x-2y-2z=9
2.8-2y-2.15=9
16-2y-30=9
-2y-14=9
-2y=9+14
-2y=23
y=-23/2
y=-11 1/2
Hp={x,y,z}={8,-11 1/2,15}