Now the x's are done, use the rows w/ x=0 to clean up the y's: <pre> Tableau #3 x y z s1 s2 s3 p 0 0 2 1 -1 -1 0 8 1 0 -1 0 1 -1 0 1 0 1 3 0 -1 2 0 6 0 0 3 0 1 2 1 22 [pre] This tells you: (last row) p = 22 and z=0 (since it is in the row w/ r=1) (second to last row) y+z=6 -> y=6. Now you can get x by back sub, x=1. (from second row) Note: 2z=8 y+3z=6 gives you y. (In case you're stuck.)</pre>