((-1)^2009 + (-1)^2007 / (-1)^2006 - (-1)^2003) / ((-1)^2007 * (-1)^2006 - (-1)^2006)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.