[11.2x+y+z,=1,12.,x-y+z],[x-2y-z,=,(3)/(2),2x+y-],[3y-5z,=9,,x+y+y+z]

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

Using matrices, solve the following system of equations for x,y and z. 2x+y+z=1 , x-2y-z=(3)/(2) , 3y-5z=9 .

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

x+y+z=4 2x-y+z=-1 2x+y-3z=-9

x+2y-2z=5,3x-y+z=8,x+y-z=4

Solve by matrix method 2x +y +z=1 x-2y-z =3//2 3y-5z =9

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

2x-y+z=6,x+2y+3z=3,3x+y-z=4

2x + 3y + z = 11, x + 2y + z = 8, x-y + z = 2