37 + 5
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23 and 19
21 and 6 are two composite numbers that have 42 as a common multiple. One of the prime factors of 42, which is 3, is a prime factor of 21 and 6 as well. The prime factorization of 42 (2 x 3 x 7) includes the prime factorization of 21 (3 x 7) and 6 (2 x 3).
The prime numbers (factors) of 42 are: 2,3,7
58.5 & 16.5....
37 and 5