SOLUTION: solve the given systems of equations. x+2y+z=2 ,3x-6y+2z=2 ,2x-z=8

1    2    1    2
3   -6    2    2
2    0   -1    8



1    2    1    2
0  -12   -1   -4
2    0   -1    8



1    2    1    2
0  -12   -1   -4
0   -4   -3    4



1    2    1    2
0    1 1/12  1/3
0   -4   -3    4



1    2    1    2
0    1 1/12  1/3
0    0 -8/3 16/3



1    2    1    2
0    1 1/12  1/3
0    0    1   -2



1    0  5/6  4/3
0    1 1/12  1/3
0    0    1   -2



1    0    0    3
0    1 1/12  1/3
0    0    1   -2



1    0    0    3
0    1    0  1/2
0    0    1   -2

(3, 1/2, -2)