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.
16a-4b+10-c= -3 , a-b+5-c= -5, 12a-2b= 0
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random