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, 5, -5}, {3, 10, 0}, {2, 9, -7}}*({{2, 5, 6}, {1, 2, 5}, {1, 3, 2}}^-1)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random