The lowest common multiple is 36
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They are the first three multiples of their lowest common multiple: 36, 72, 108.
Any multiple of 9 is a common multiple of 3 and 9.
The common multiples of an set of numbers are the multiples of their lowest common multiple. lcm(7, 8, 9) = 504 → the first 3 common multiples of 7, 8, 9 are 504, 1008, 1512.
Multiples of 3: 3 6 9 12 15 18Multiples of 4: 4 8 12 16The lowest multiple that is common to both 3 and 4 is 12.
36