Khan/khan-exercises — Issue #4578: Systems of equations - not acepting answer 
Author: KhanBugz
Created: 2011-10-19 03:54:16+00:00
State: open
Labels: ie8, xp

doesnt let my put mi answer i even put all the hints to see the right answer it didnt even accept that

[systems_of_equations.html?seed=47&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations.html?seed=47&problem=0&debug)

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