Khan/khan-exercises — pull request #4629 by kramtark (2011-10-20 00:59:43+00:00)
Title: Exercise Draft - Distributive Property with Variables

Just getting this sandboxed and gathering initial feedback on the first problem type for this module. First exercise module attempt so all comments are appreciated.

Ideally it'd be awesome if the answers didn't have to be multiple-choice, but right now I don't see an obvious way around it.