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There exists infinite common multiples of 9, 12 & 18.

But, the least common multiple is only one which can be found by the factorization of each number:

PF of 9 = 3x3

PF of 12 = 2x2x3

PF of 18 = 2x3x3

Thus, LCM is 3x3x2x2 = 36

Common multiples can be found by multiplying 36(LCM) with 1, 2, 3,...etc.

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14y ago

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More answers

The LCM of 9, 12, and 18 is 36. Additional common multiples are 72, 108, 144, 180, etc.

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9y ago
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Q: What are the common multiples of 9 12 and 18?
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