- #1

- 27

- 0

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.

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.