http://www.ck12.org Chapter 8. Systems and Matrices
− 3 x+y=− 7
−x+ 4 y= 53 x+y= 6
− 6 x− 2 y= 102 x−y+z= 4
4 x+ 7 y−z= 38
−x+ 3 y+ 2 z= 234 x+y−z=− 16
− 3 x+ 4 y+z= 18
x+y− 3 z=− 173 x+ 2 y− 3 z= 7
−x+ 5 y+ 2 z= 29
x+ 2 y+z= 152 x+y− 2 z= 4
− 4 x− 2 y+ 4 z=− 8
3 x+y−z= 5−x+ 3 y+z= 11
3 x+y+ 2 z= 27
5 x−y−z= 5