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.
ReplaceAll[F*(1+A-B), {A -> (81+6/12), B -> 67, F -> 1}]
ReplaceAll[F*(1+A-B), {A -> (81+6/12), B -> 67, F -> 1}]
Natural Language
Math Input
Extended Keyboard
