Any multiple of 42.
Common multiples of 14 and 84 include all multiples of 84 (84, 168, 252 and so on) because 84 = 6 x 14, a multiple of 14.
42
42, 84, 126
As 84 = 14 x 6: All the factors of 14 are common to both, ie the common factors of 14 and 84 are: 1, 2, 7, 14; All the multiples of 84 are common to both 14 and 84, ie the common multiples of 14 and 84 are: 84, 168, 252, 336, 420, 504, 588, 672, 756, 840, ...
Since 14 is a multiple of 7, all of its multiples are common.
6,12,18,24,30,36,42,48,54,60,66,72.............
The least common multiple or LCM of 6 and 14 is 42The Least Common Multiple (LCM) for 6 14 is 426: 6,12,18,24,30,36,4214: 14,28,42LCM=42
Common multiples of 14 and 35 include 70, 140 and 210
The least common multiples of 7 and 14 are 14,28 and 42>
Multiples of 6 include 6, 12 and 18. For them to be common, they need to be compared to another set of multiples.
The multiples of 14 are 14, 28, 42, 56, 70, 84, 98, 112, 126, 140, and so on. The multiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, and so on. The only common multiple within the first 10 multiples of both is 42.
14