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.
10*a+5*b = 100, 2*a-7*b+2*c = 50, 3*a-3*b-5*c = 50
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random