The LCM of 7 and 9 is 63.
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The LCM of 2 and 3 is 6. The LCM of 2 and 4 is 4. The LCM of 5 and 7 is 35. The LCM of 7 and 9 is 63.
The LCM of 9 and 10 is 90. Other multiples include 180, 270 and 360.
The least common multiple for 7 and 9 is 63.
The LCM is 56.
The first 5 common multiples are the first 5 multiples of their lowest common multiple (LCM) LCM(9, 10) = 90 → first 5 common multiples are 90, 180, 270, 360, 450.