Khan/khan-exercises — Issue #7056: Adding fractions with common denominators - Addition and Subtraction of Three fractions
Author: KhanBugz
Created: 2011-11-25 17:15:51+00:00
State: open
Labels: firefox, not-showing, vista

Reporter: sadefamodu2000@yahoo.com

1/2-1/4+1/5-1/6+1/7

[adding_fractions_with_common_denominators.html?seed=73&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_fractions_with_common_denominators.html?seed=73&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_fractions_with_common_denominators.html?seed=73&problem=0&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.0; WOW64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

MathJax is loaded, ready, queue length: 0