Khan/khan-exercises — Issue #12098: Adding and subtracting negative numbers - thankyou
Author: KhanBugz
Created: 2012-01-25 18:23:33+00:00
State: open
Labels: firefox, other, snowleo

thanks for fixing videos

[adding_and_subtracting_negative_numbers.html?seed=149&problem=PLUS](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_negative_numbers.html?seed=149&problem=PLUS&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_negative_numbers.html?seed=149&problem=PLUS&debug&activity=%5B%5D)

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Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3

MathJax is loaded, ready, queue length: 0