15, 30, 45, 60, 75, 90...
9, 18, 27, 36, 45, 54, 63...
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The LCM of 3 and 5 is 15. The multiples of 3 are , 6, 9, 12, 15, and so on. The multiples of 5 are 5, 10, 15, and so on. The LCM is 15.
It is: 360
The biggest common divisor of 9 and 15 is 3. To find the least common multiples of 9 an 15 you should multiply these numbers and divide the result by their biggest common divisor. 9x15/3=45
4, 8, 12 and so on. 9, 18, 27 and so on. 15, 30, 45 and so on. Common multiples include 180, 360, 540 and so on.
3, 9, 15