a Gauss-Jordan elimináció:
3 -1 2 1 0 0
1 -3 -4 0 1 0
2 2 5 0 0 1
3 -1 2 1 0 0
0 -8/3 -14/3 -1/3 1 0
0 8/3 11/3 -2/3 0 1
3 -1 2 1 0 0
0 -8/3 -14/3 -1/3 1 0
0 0 -1 -1 1 1
3 -1 0 -1 2 2
0 -8/3 0 13/3 -11/3 -14/3
0 0 1 1 -1 -1
3 0 0 -21/8 27/8 15/4
0 1 0 -13/8 11/8 7/4
0 0 1 1 -1 -1
1 0 0 -7/8 9/8 5/4
0 1 0 -13/8 11/8 7/4
0 0 1 1 -1 -1