Khan/khan-exercises — Issue #13650: Adding and subtracting fractions - confusing
Author: KhanBugz
Created: 2012-02-11 22:52:35+00:00
State: open
Labels: lion, safari, wrong-or-unclear

solution is not simplified in this exercise -36/40 is -18/20 while it is on others, inconsistency

[adding_and_subtracting_fractions.html?seed=191&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_fractions.html?seed=191&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_fractions.html?seed=191&problem=0&debug&activity=%5B%5B%22correct-activity%22%2C%22%5C%22-18%2F20%5C%22%22%2C62%5D%2C%5B%22hint-activity%22%2C%220%22%2C138%5D%2C%5B%22hint-activity%22%2C%220%22%2C139%5D%2C%5B%22hint-activity%22%2C%220%22%2C139%5D%2C%5B%22hint-activity%22%2C%220%22%2C141%5D%2C%5B%22hint-activity%22%2C%220%22%2C142%5D%2C%5B%22hint-activity%22%2C%220%22%2C147%5D%5D)

["-18/20"]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/534.53.11 (KHTML, like Gecko) Version/5.1.3 Safari/534.53.10

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