12, yes. 16, no.
The least common multiple of 19 , 12 = 228
228 is a multiple of 12 so estimation is not necessary but if you must, then 240/12 = 20
228
228
228
228
The LCM is: 228
The least common multiple of 19 , 6 , 12 = 228
The LCM is: 228
Least Common Multiple (LCM) for 3 12 19 is 228.
The least common multiple of the numbers 85 and 210 is 3,570.
The Least Common Multiple of 12 and 16 is 48.