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Anonymous
The LCM is 5184. The numbers 81 and 64 have no common factors. When you have two relatively prime numbers, you find their LCM by multiplying them. So 5184 is 81x64.
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LCM of 81 and 3 is 81.
The LCM of 81 and 216 is 648.
The LCM is 405.
The LCM of 81 and 63 is 567.
The least common multiple (LCM) of 81 and 75 is 2025.