Question

what is a common multiple of 12 and 15

Answer 1

60 find the lcm.

Answer 2

common multiple is the number that can devide both 12 & 15
so there is infinitly many multiple , any way u shud found the least comon multiple (LCM) that devide both like this
12=2*2*3
15=3*5
as u can see greatest comon devisor(GCD) is 3
LCM=12*15/GCD