[Aperocky]

By relatively prime, do you mean the largest denominator == 1? Or in other words, 15 and 22 should be relatively prime?

[graphpapa]

This is what is commonly meant by ‘relatively prime’, yes. Also referred to as being coprime.

Defn: a & b are coprime/ relatively prime iff GCD(a,b) = 1

[dan-robertson]

Yes, relatively prime means coprime means gcd=1