Hitunglah X - 3y + 2z = 9 2x + 4y - 3z = -9 3x - 2y + 5z =12 Plissss bantu jawab

2x-6y+4z=18
2x+4y-3z=-9
=> -10y+7z=27

3x-9y+6z=27
3x-2y+5z=12
=> -7y+z=15

-10y+7z=27
-49y+7z=105
=> 39y=-78
y=-2
=>-10(-2)+7z=27
20+7z=27
7z=7
z=1
=> 2x-6(-2)+4(1)=18
2x+12+4=18
2x=2
x=1
Hp:{1,-2,1}