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 - y - z = -1; 3x + y - z = -3; 2x - 3y - 5z = -1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random