The LCM is 15.
15
3
15 1*15 =15 5*3 = 15
3:3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,99 15:15,30,45,60,75,90,105
That would be 15
Only one can be least; that's 15. Other common multiples include 30 and 45.
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
Since 15 is a multiple of 3, it is automatically the LCM.
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.
The LCM of 3 and 15 is 15.
The least common multiple is 30. The greatest common factor is 3.