How can you the least find denominator for 1/8 and 2/9?
First, find the prime factorization of each denominator:
Next, find the product of the greatest powers of each prime that occurs:
In this case, the least common denominator is
In the above case, we get the same result by just multiplying the two denominators. For an example where that is not the case, consider
The only primes which appear are
So the least common denominator between