Khan/khan-exercises — Issue #13932: Systems of equations with substitution - no problem to work on
Author: KhanBugz
Created: 2012-02-15 22:14:25+00:00
State: open
Labels: ie8, not-showing, vista

[systems_of_equations_with_substitution.html?seed=115&problem=substitution-y](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_with_substitution.html?seed=115&problem=substitution-y&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_with_substitution.html?seed=115&problem=substitution-y&debug&activity=%5B%5D)

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