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.
28/(1-d) + 28 + 28(1 - d) = 147
28/(1-d) + 28 + 28(1 - d) = 147
Natural Language
Math Input
Extended Keyboard
