Latest exam Aptitude Question SOLUTION: 1. 2. 5x+2y-z=-7 x-2y-3z=-1 x-2y+2z=0 2x+y+z=6 3y+z=17 x+3y-2z=13 3. 4. x+3y+z=0 x+y+z=6 x+y-z=0 2x-yz+z=3 x-2y-4z=0 3x-z=