Selesaikan SPL berikut ini dgn menggunakan Eliminasi Gaus dan subtitusi balik :
x+2y+z=6
x+3y+2z=9
2X+y+2z=12
x+2y+z=6
x+3y+2z=9
2X+y+2z=12
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x+2y+z=6
----------------- -
y+z=3
2X+y+2z=12 -----------> 2x +y+2z=12
x+2y+z=6 kalikan 2 --> 2x +4y+2z=12
---------------------------------------------------- -
-3y=0
y= 0
z= 3
x=3