Menentukan Hp SPLTV menggunakan metode ELIMINASI... 2x+3y-z=15 3x+2y+z=20 x+y-3z=1

2x+3y-z=15----->dikali3
3x+2y+z=20---->Dikali 3
x+y-3z=1

6x+9y-3z=45
9x+6y+3z=60
x+y-3z=1

Pers 1 dan 2
6x+9y-3z=45
9x+6y+3z=60. +
--------------------
15x+15y=105.( :15) kemudian (×10)
10x+10y=70


pers 2 dan 3
9x+6y+3z=60
x+y-3z=1
-------------------+
10x+7y=61
10x+10y=70
----------------(-)
-3y=-9
y=3---->10x+30=70--->x=40/10=4

4+3-3z=1
-3z=1-7
z=-6/-3=2

XYZ=4.3.2