I attached a pic of a practice GRE problem. The answer is D) relationship cannot be determined. I understand this answer and it is actually what I picked, but my 2 methods of doing this problem is contradicting each other. If you use the method of plugging in random #s you'll discover that the answer is D. However, my other method is trying to match A&B. For quantity A: we get (w+z)/(w-z) For B: (z+w)/(z-w)=(w+z)/(z-w) <<<<<Can I not do this flip for some reason? It is the only place where I can see a source of error =(w+z)/-(w-z) Divide both A&B by w+z and multiplying by w-z we getL A=1, B= -1 So this would mean that A>B, however this clearly contradicts my other answer and I can't identify why.