Hi, I'm having a lot of trouble with the following question:(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

(a) Let x,y ∈ Z. Prove that if x>0 and x+y <xy, then y>0

2. Relevant equations

x+y <xy, then y>0

3. The attempt at a solution

I am very confused with this problem, and am not even sure on how to start. Any tips/suggestions to help me get started would be greatly appreciated.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Problem with Sets

**Physics Forums | Science Articles, Homework Help, Discussion**