math
posted by Anonymous .
How do you find the LCM of 3 and 7?

21

reason for this is:
multiples of 3 : 3,6,9,12,15,18,21,24,27
multiples of 7 : 7,14,21,28
multiple that is the lowest that both 3 and 7 have is the lowest common multiple (LCM)