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.
Solve[ 0==1.33X+2Z-667==10.7X+1.33Y+4Z-18700,0==4000-2Y+12000-4X]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random