Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
x-3y+2z=-11,2x-y+3z=-5,3x+2y-4z=20
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random