Question 865697

Add (-1 * row1) to row2
1	 2	 3	 11
0	 -1	 -2	 -6
2	 2	 1	 3

Add (-2 * row1) to row3
1	 2	 3	 11
0	 -1	 -2	 -6
0	 -2	 -5	 -19

Divide row2 by -1
1	 2	 3	 11
0	 1	 2	 6
0	 -2	 -5	 -19

Add (2 * row2) to row3
1	 2	 3	 11
0	 1	 2	 6
0	 0	 -1	 -7

Divide row3 by -1
1	 2	 3	 11
0	 1	 2	 6
0	 0	 1	 7

Add (-2 * row3) to row2
1	 2	 3	 11
0	 1	 0	 -8
0	 0	 1	 7

Add (-3 * row3) to row1
1	 2	 0	 -10
0	 1	 0	 -8
0	 0	 1	 7

Add (-2 * row2) to row1
1	 0	 0	 6
0	 1	 0	 -8
0	 0	 1	 7