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 via inversa: \begincases x + 2y = -1 }, {-x + y = -2 \endcases
solve via inversa: \begincases x + 2y = -1 }, {-x + y = -2 \endcases
Natural Language
Math Input
Extended Keyboard
