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.
(1 - 1%2f3 %2b 1%2f5) %2f (1%2f2 - 1%2f4 %2b 1%2f6)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random