a Gauss-Jordan elimináció:
-1 2 1 1 0 0
2 -3 1 0 1 0
1 1 2 0 0 1
-1 2 1 1 0 0
0 1 3 2 1 0
0 3 3 1 0 1
-1 2 1 1 0 0
0 1 3 2 1 0
0 0 -6 -5 -3 1
-1 2 0 1/6 -1/2 1/6
0 1 0 -1/2 -1/2 1/2
0 0 1 5/6 1/2 -1/6
-1 0 0 7/6 1/2 -5/6
0 1 0 -1/2 -1/2 1/2
0 0 1 5/6 1/2 -1/6
1 0 0 -7/6 -1/2 5/6
0 1 0 -1/2 -1/2 1/2
0 0 1 5/6 1/2 -1/6