Khan/khan-exercises — Issue #4137: Properties of numbers 2 - properties of nubers two
Author: KhanBugz
Created: 2011-10-11 01:04:13+00:00
State: open
Labels: ie8, xp

it states what can we add to get 7717 it makes no sence it shoudle say subtrac

[properties_of_numbers_2.html?seed=155&problem=additive-inverse](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_2.html?seed=155&problem=additive-inverse)

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