Khan/khan-exercises — pull request #8061 by smenks13 (2011-12-07 21:02:35+00:00)
Title: Elimination 0.5: Anchored index to control problem type, changed hint colors

In the following problem, the hint shown after the variable is eliminated doesn't match up with the original equations:

http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_with_elimination_0.5.html?seed=122&debug

Using the Index should fix that. Also, switched blue and green.