LCM(2, 8, 21) = 168
The LCM is 168.
3: 3 28: 7, 2, 2 21: 7, 3 LCM = 3x7x4 = 84
LCM for 2 and 21 is 42.
The LCM is: 168
The LCM is 8.
LCM of 2 and 8 = 8
The LCM is: 296,184
The Least Common Multiple (LCM) of 2 and 21 is 42.
168
168
The LCM is: 88
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.