The product of the GCF and the LCM is the same as the product of the original two numbers. Divide the product of the original numbers by the GCF. The result will be the LCM.
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3 and 84
The GCF and LCM of 10 and 10 is 10.
The numbers 12 and 360 fit those criteria.
The GCF is 3 The LCM is 4,590
If the GCF of two numbers is 1, their LCM will be their product. Such numbers are called relatively prime, or co-prime. Any two prime numbers (like 3 and 5) will be that way, but the numbers don't have to be prime (like 4 and 9).