Khan/khan-exercises — Issue #14056: Systems of equations - other
Author: KhanBugz
Created: 2012-02-17 04:59:26+00:00
State: open
Labels: chrome, other, win7

Reporter: mlaulea@gmail.com

it keeps on saying that khan exercise is hiding or currently not available...

[systems_of_equations.html?seed=127&problem=substitution-x](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations.html?seed=127&problem=substitution-x&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations.html?seed=127&problem=substitution-x&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11

MathJax is loaded, ready, queue length: 0