Question 40542
2w-x+5y+z=-3
3w+2x+2y-6z=-32
w+3x+3y-z=-47
5w-2x-3y+3z=49

The solution procedure is much to long to be 
presented on this site.  May I suggest you 
access the following site where you can see
an example of how you should procede:
http://www.answers.com/topic/gaussian-elimination.

By the way; the solution for your system is 
w=2,x=-12,y=-4,z=1
Cheers,
Stan H.