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.
a+b+c+24= 38, 8a+4b+2c+24=40, 27a+9b+3c+24 = 42
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random