berapa hasil Dari 2x-y+3z=-5......(1) 3x+2y-z=6.......(2) 4x-3z+2z=9.....(3)

(1)2x-y+3z=-5
2x-y+3z-3z=-5-3z
2x-y=-5-3z
(2)3x+2y-z=6
3x+2y-z+z=6+z
3x+2y=6+z
(3)4x-3z+2z=9
4x-z=9
4x-z+z=9+z
4x=9+z
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