I Have the same question :
The answer is 392. You get it by multiplying 49 by 56 and dividing the answer by the GCF which is 7. So 49x56/7=392
The LCM is: 1,176
LCM(21, 49, 56) = 1176
1960
3528
The LCM of 7 and 49 is 49.
The LCM is 56.
The LCM of these numbers is 56. LCM is Least Common Multiple.
LCM(8, 14) = 56
The LCM is: 56
LCM of 7 8 and 14 is 56.
Since 56 is a multiple of 8, it is automatically the LCM.
The LCM is: 56