The common multiples of 2 and 7 are 14, 28, 42, 56, 70, 84, 98, and so on.
Here are some common multiples of 12 and 7 84, 168, 1008 and 12096.
7,14,21,28,35,42,49,56,63,70,77,84,91,98,105
14,28,42,56,70...
42
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.
The first 2 multiples are 42,84.
35..
14 = 2 X 7 42 = 2 X 3 X 7 So 2 & 7 are common to both multiples / NB '3' is NOT a common multiple.
There are an infinite number of common multiples for 7 and nine. Some of them are 63, 126, 189, 252, 315, and 378.63
28 and 56
Any multiple of 14.