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.
4x-1y+2z=6, x+2y-z=6, 6x+3y=18
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
