Khan/khan-exercises — Issue #10824: Systems of equations word problems - same equation
Author: KhanBugz
Created: 2012-01-10 06:16:50+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: cosmodemonic@gmail.com

The answer is right and the problem is solvable because there's only one positive integer set that fulfills the equation but the explanation is wrong... "y=9" appears out of nowhere.

[systems_of_equations_word_problems.html?seed=60&problem=elimination-x](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_word_problems.html?seed=60&problem=elimination-x&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_word_problems.html?seed=60&problem=elimination-x&debug&activity=%5B%5B%22correct-activity%22%2C%22%5B%5C%222%5C%22%2C%5C%229%5C%22%5D%22%2C337%5D%5D)

[["2","9"]]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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