Posted by JT on Thursday, April 25, 2013 at 8:22am.
gaussian elimination
x+Y+Z=2
Xy+5z+22
5x+y+z=22

math pre calc  Steve, Thursday, April 25, 2013 at 11:09am
plug your equations in at
http://www.gregthatcher.com/Mathematics/GaussJordan.aspx
to see all the steps of the solution.