Khan/khan-exercises — Issue #15283: Solving for a variable - ANSWER IN NOT CORRECT
Author: KhanBugz
Created: 2012-03-03 03:40:25+00:00
State: open
Labels: ie8, win7, wrong-or-unclear

Reporter: SHEARER4FAITH@EMBARQMAIL.COM

HOW CAN -10P FROM 9P BE -P i THOUGHT IT SHOULD BE -1P ON QUESTION 25 IN SOLVING VARIABLES

[solving_for_a_variable.html?seed=107&problem=GABC_DEF](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solving_for_a_variable.html?seed=107&problem=GABC_DEF&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solving_for_a_variable.html?seed=107&problem=GABC_DEF&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C105%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22%3CCODE%20style%3D%5C%5C%5C%22DISPLAY%3A%20none%5C%5C%5C%22%20type%3D%5C%5C%5C%22math%2Ftex%5C%5C%5C%22%3En%3D%20%5C%5C%5C%5Cdfrac%7B19p%20%2B%209q%20%2B%2012%7D%7B4pq%7D%3C%2FCODE%3E%5C%22%22%2C18%5D%2C%5B%22hint-activity%22%2C%220%22%2C27%5D%2C%5B%22hint-activity%22%2C%220%22%2C40%5D%2C%5B%22hint-activity%22%2C%220%22%2C42%5D%2C%5B%22hint-activity%22%2C%220%22%2C45%5D%2C%5B%22hint-activity%22%2C%220%22%2C47%5D%2C%5B%22hint-activity%22%2C%220%22%2C55%5D%2C%5B%22correct-activity%22%2C%22%5C%22%3CCODE%20style%3D%5C%5C%5C%22DISPLAY%3A%20none%5C%5C%5C%22%20type%3D%5C%5C%5C%22math%2Ftex%5C%5C%5C%22%3En%3D%20%5C%5C%5C%5Cdfrac%7B-p%20%2B%209q%20%2B%2012%7D%7B4pq%7D%3C%2FCODE%3E%5C%22%22%2C92%5D%5D)

["None of the above.","n= \\dfrac{19p + 9q + 12}{4pq}","n= \\dfrac{-p + 9q + 12}{4pq}"]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)

MathJax is loaded, ready, queue length: 0