Khan/khan-exercises — Issue #6840: Linear equations 3 - dumb smiley face
Author: KhanBugz
Created: 2011-11-21 20:57:58+00:00
State: open
Labels: ie8, other, xp

[linear_equations_3.html?seed=23&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/linear_equations_3.html?seed=23&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/linear_equations_3.html?seed=23&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%227%5C%22%22%2C63%5D%5D)

["7"]

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