if two numbers are relatively prime what is there LCM?
In that case it would be their product
e.g. 1/3 + 5/7
= 7/21 + 15/21
= 22/21
Two numbers are relatively prime when they have no prime factor in common.
If two numbers are relatively prime then their greatest common factor will be 1.
In this case:
GCF (a, b) = 1
Using the formula for product of two numbers:
a • b = GCF • LCM
a • b = 1 • LCM
a • b = LCM
LCM = a • b
Least common multiple of two relatively prime numbers is the product of those two numbers.