Question 54320
Solve the system of equations algebrically.
Eliminate the z variable. 
2x-y+4z=-2...............................I
3x-2y-z=-3......................................II
x+4y+2z=17...............................III
EQN.III+2*EQN.II
X+4Y+2Z+6X-4Y-2Z=17-6=11
7X=11.............X=11/7
EQN.I-2*EQN.III
2X-Y+4Z-2X-8Y-4Z=-2-34=-36
-9Y=-36
Y=4
SUBSTITUTING IN EQN.I
2*11/7 -4 +4Z = -2
4Z = -8/7
Z=-2/7