The LCM is 42
you would have to make a factor tree for 8, 14, and 21. 8 equals 2*2*2. 14 equals 7*2 and 21 equals 7*3. Then you have to see what is the lowest number that they have in common. 8,14,21 do not have a number in commone so there isn't a common multiple.
The LCM is 2.
The LCM is: 84
42
168
168
168
The LCM of 14 and 21 is 42.
The LCM is 168
The LCM is 42
The LCM is 126.
LCM for 14 and 21 is 42.
LCM(4, 21, 14) = 84
The LCM is: 84
The LCM is 42.
The LCM is 168.