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.
-4 | 7x -4 | +3 = -2
-4 | 7x -4 | +3 = -2
Natural Language
Math Input
Extended Keyboard
