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.
(12 - X)/6 + (0 - X)/4 - (X - (-6))/2 == 0
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random