63, 126, 189
Wiki User
∙ 5y agoIf that's 9, 14 and 21, the first three common multiples are 126, 252 and 378.
21, 42 and 63
21
7, 14, 21
63, 126, 189
42, 84, 126
63, 126, 189
84, 168, 252
126, 252, 378
126, 252, 378 and so on.
Any multiple of 21.
They are: 21, 42 and 63