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.
3x = 82, x + 2y +2y = 31, y - 2z = -1, solve z + xy =
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
