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+2b+3c=68, 3a-4b+5c=46, 5a+6b-7c=32
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
