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 + d = 520 && c + f = 715 && d - b + f + g = 612 && a + d + f + g = 1100 && a + c + d + f = 1235 && c + d + f + g = 1200 && a>=0, b>=0, c>=0, d>=0, f>=0, g>=0
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random