LCM: 21
The lowest common multiple is 21
Least Common Multiple (LCM) for 7 12 21 is 84
7
It is: 21
The LCM is: 21
The LCM is: 21
Least Common Multiple:21 Greatest Common Factor:1
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 of 7 and 21 is 21. Since 7 is a factor of 21, the LCM is automatically 21.21 is.
Lowest common multiple of 2 and 7 is 14.
The lowest common multiple would be 77.
The least common multiple of 14 and 21 is 42.14, 28, 42, 56 ...21, 42, 63, 84, ...