Khan/khan-exercises — Issue #9977: Linear equations 4 - Correct answer is marked incorrectly 
Author: KhanBugz
Created: 2012-01-01 15:39:13+00:00
State: open
Labels: chrome, other, xp

Reporter: phrenzy84@gmail.com

Going through linear equations 1-4 exercises and the answer formats are inconsistent.

Here is a example: 2 = 16 / 4x - 4

The simplified answer is 4/1, which is marked wrong, but its simplification answer of 24/8 is marked correctly.

And yet with some questions the opposite is true where only a simplified answer will only be accepted.

I hope you are able to understand my issue and track down/fix the problem.

[linear_equations_4.html?seed=5&problem=x-on-bottom](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/linear_equations_4.html?seed=5&problem=x-on-bottom&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/linear_equations_4.html?seed=5&problem=x-on-bottom&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%221%5C%22%5D%22%2C47%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%224%2F1%5C%22%5D%22%2C95%5D%2C%5B%22correct-activity%22%2C%22%5B%5C%2224%2F8%5C%22%5D%22%2C18%5D%5D)

[["1"],["4/1"],["24/8"]]

Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.63 Safari/535.7

MathJax is loaded, ready, queue length: 0