4296 1 1
6809 1 2
9975 1 3
-1 1 4
0 0 0
2 1 1
5 1 5
10 1 0
0 0 0 
1000 1 2
-107 1 5
72 1 0
0 0 0
0 0 0

Equations:

4296 x_1 + 6809 x_2 + 9975 x_3 - x_4 = 0
2 x_1 + 5 x_5 + 10 = 0
1000 x_2 - 107 x_5 + 72 = 0