Khan/khan-exercises — Issue #12574: Linear equations 4 - Right answer marked wrong?
Author: KhanBugz
Created: 2012-01-31 18:36:06+00:00
State: open
Labels: ipad, other, safari

Reporter: sueschatz@comcast.net

Put answer as both x= -15/38. And x=-(15/38) both marked wrong. ???

[linear_equations_4.html?seed=31&problem=x-on-top-and-bottom](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/linear_equations_4.html?seed=31&problem=x-on-top-and-bottom&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/linear_equations_4.html?seed=31&problem=x-on-top-and-bottom&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22X%3D-27%2F46%5C%22%22%2C256%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22X%3D-15%2F38%5C%22%22%2C254%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22X%3D-15%2F38%5C%22%22%2C9%5D%2C%5B%22hint-activity%22%2C%220%22%2C9%5D%2C%5B%22hint-activity%22%2C%220%22%2C39%5D%2C%5B%22hint-activity%22%2C%220%22%2C59%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22X%3D%20-(15%2F38\)%5C%22%22%2C97%5D%2C%5B%22hint-activity%22%2C%220%22%2C13%5D%5D)

["X=-27/46","X=-15/38","X=-15/38","X= -(15/38)"]

Mozilla/5.0 (iPad; U; CPU OS 4_3_5 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8L1 Safari/6533.18.5

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