Khan/khan-exercises — Issue #7985: Properties of numbers 2 - Problem
Author: KhanBugz
Created: 2011-12-07 04:38:02+00:00
State: open
Labels: ie8, ie9, other, win7

Nevermind, I figured it out. Thanks! :) :D :P

[properties_of_numbers_2.html?seed=132&problem=additive-inverse](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_2.html?seed=132&problem=additive-inverse&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_2.html?seed=132&problem=additive-inverse&debug&activity=%5B%5D)

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