LCM and GCF of 9 12 and 15

In this video, I use a factor tree in order to find the prime lowest common multiple and the least common multiple of the numbers 12,15 and 9 The least common multiple of 12,15,9 equals 180 The greatest common factor of 12,15, and 9 equals 3 The prime factorization of 12 equals 2,2,3 Prime factors of 15 = 3 5 Prime factors of 9 = 3,3