Question

Tentukan hp dari sintem persamaan linier 3 variabel
x-2y+3z= -2
2x+y-z= -1
x-y+2z= 1

Answer 1

X-2y+3z=-2
2x+y-z=-1

2x-4y+6z=-4
2x+y-z=-1
-5y+7z=-3

2x+y-z=-1
x-y+2z=1

2x+y-z=-1
2x-2y+4z=2
3y-5z=-3

-5y+7z=-3
3y-5z=-3

-15y+21z=-9
15y-25z=-15
-4z=-24
z=6

3y-5z=-3
3y-30=-3
y=9

x-y+2z=1
x-9+12=1
x=-2