Khan/khan-exercises — Issue #7813: Subtraction 2 - Chain Rule 1 does not make any sense!
Author: KhanBugz
Created: 2011-12-05 18:00:43+00:00
State: open
Labels: chrome, hard, leopard

Reporter: superduperallstars6

[subtraction_2.html?seed=160&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/subtraction_2.html?seed=160&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/subtraction_2.html?seed=160&problem=0&debug&activity=%5B%5D)

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Mozilla/5.0 (Macintosh; Intel Mac OS X 10_5_8) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

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