a Gauss-Jordan elimináció:
-2 1 4 1 0 0
1 0 3 0 1 0
-1 2 -3 0 0 1
-2 1 4 1 0 0
0 1/2 5 1/2 1 0
0 3/2 -5 -1/2 0 1
-2 1 4 1 0 0
0 1/2 5 1/2 1 0
0 0 -20 -2 -3 1
-2 1 0 3/5 -3/5 1/5
0 1/2 0 0 1/4 1/4
0 0 1 1/10 3/20 -1/20
-2 0 0 3/5 -11/10 -3/10
0 1 0 0 1/2 1/2
0 0 1 1/10 3/20 -1/20
1 0 0 -3/10 11/20 3/20
0 1 0 0 1/2 1/2
0 0 1 1/10 3/20 -1/20