Bluebook, page 674 #19

Quix
Sun, 27 Jul 2008 22:11:19 +0000

You isolate X and Y but Multiplying K^-2 and N^2 by 1/-4/3 and 1/ 4/3 to get k^6/4 and n^6/4, then you apply -2/3 to both k^6/4 and n^6/4 to get K^-12/12 and N^12/12 which is KN. But since 1 of them is negative, you take the reciprocal to convert it to positive, so its 1/KN

Sorry if that confused you! im bad at explaining =(