Khan/khan-exercises — Issue #14026: Systems of equations with elimination - No eenergy points earned for watching video?
Author: KhanBugz
Created: 2012-02-16 22:49:11+00:00
State: open
Labels: firefox, other

Reporter: JOAQUIN.FOX@GMAIL.COM

I just watched a video on elimination 2 and earned no points. Why?

[systems_of_equations_with_elimination.html?seed=120&problem=elimination-y](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_with_elimination.html?seed=120&problem=elimination-y&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_with_elimination.html?seed=120&problem=elimination-y&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%22-16%5C%22%2C%5C%2215%5C%22%5D%22%2C86%5D%5D)

[["-16","15"]]

Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:10.0.1) Gecko/20100101 Firefox/10.0.1

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