1.\:\:elimination\:3x+y+z=-1,\:4x+2y-z=6,\:x+y-3z=11
2.\:\:substitution\:x+2y-3z=-23,\:4y+2z=-4,\:-x+y-z=-2
3.\:\:substitution\:x+2y-3z=-13,\:4y+2z=2,\:-x+y-z=-2
4.\:\:elimination\:x+2y-3z=-27,\:4y+2z=10,\:-x+y-z=-4
5.\:\:substitution\:x+y-z=3,\:2x+y+z=5,\:3x-2y+z=4
6.\:\:elimination\:x+y-z=0,\:x+2y-3z=-6,\:-2x+3y-4z=10
7.\:\:substitution\:x+y+z=24,\:x-2y+0=0,\:2x+3y+1=12
8.\:\:elimination\:5x-2y+4z=9,\:x+y+z=6,\:4x+3y+3z=3
9.\:\:substitution\:x+2z=8,\:x-2y-2z=4,\:2x+5y-6z=6
10.\:\:elimination\:y+z=-4,\:5x+4y-16z=-6,\:x-y+5z=6
