From Sami Khawam (a9501901@unet.univie.ac.at)

Here is a small program for the TI-82 that will solve Linear
systems of equations. 
The values can be entered in the matrix editor or at the program execution.
An example :
   
   For solving:

   { 3x + 4y + 6z = 45
   { 2x + 7y + 9z = -13
   { -x + 9y - 3z = 11

   do this:

   prgmLINSYS

   NBR OF UNKNOWN? 3

   ENTER VALUES NOW(0/1 = N/Y)? 1       // for YES. Choose NO if
                                        // you had allready entered the 
                                        // values in the matrix editor.
                                        // Note: use [C], which must be
                                        // {n,n+1} long, where n is the number 
                                        // of unknown.

   [[3,4,6,45][2,7,9,-13][-1,9,-3]]     // Enter the values 
   

   // and now all the steps will be displayed( during an exam :) ... ) 
