The first 2 multiples are 42,84.
Multiples of 7 include 7, 14, 21, 28 and so on. For them to be common, they need to be compared to another set of multiples.
The 3 numbers don't have a common multiple except for 1.
Multiples of 7 include 7, 14, 21, 28, 35 and so on. For them to be common, they need to be compared to another set of multiples.Itself and any other multiples of 7
Common multiples of 7 and 4 include any multiple of 28.
14,28,42,56,70...
42
The first 2 multiples are 42,84.
lcm(2, 7) = 14 → first 3 common multiples are: 14, 28, 42; lcm(2, 8) = 8 → first 3 common multiples are: 8, 16, 24; lcm(7, 8) = 56 → first 3 common multiples are: 56, 112, 168; lcm(2, 7, 8) = 56 → first 3 common multiples are: 56, 112, 168.
2
Every multiple of 14 !
28 and 56
Any multiple of 14.
28 and 56.
The common multiples of 7, 8, and 8 are the infinite set that includes any multiple of 56. The common multiples are thus 56, 112, 168, 224, 280, and so on.
The LCM is 42.
14, 28, 42