I forgot how to prove the following, can anyone jog my memory:(adsbygoogle = window.adsbygoogle || []).push({});

Let m,n be natural numbers s.t. gcd(m,n) = 1 and n|k and m|k for some natural number k.

Then nm|k.

I know I'll kick myself when I find out. Thanks.

**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!

# Very easy question

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