Khan/khan-exercises — Issue #13648: Algebra challenge - Answer seems wrong
Author: KhanBugz
Created: 2012-02-11 21:52:59+00:00
State: open
Labels: lion, safari, wrong-or-unclear

-5 or 5?

[algebra_challenge.html?seed=156&problem=elimination (systems_of_equations)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=156&problem=elimination&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=156&problem=elimination&debug&activity=%5B%5D)

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