Abstract algebra help plz! I'm not sure if I've posted in the correct forum but I would like some help with the following question: http://i12.tinypic.com/33mlik6.jpg" I've to complete this table but I am unsure of how to do the very first step which is to fnd wv. I am learning this from a book and this is one of the given exercises however it doesn't provide a solution so I am really stuck. Hope someone can help!! I know the associative law is: a * ( b * c ) = (a * b) * c (but I am unsure on how to apply this to my question. Can anyone start me off?) thanks very much!