21, 42 and 63
Wiki User
∙ 2012-01-24 23:12:53If that's 9, 14 and 21, the first three common multiples are 126, 252 and 378.
21
7, 14, 21
63, 126, 189
42, 84, 126
63, 126, 189
84, 168, 252
7, 14 and 21.
63, 126, 189
63, 126, 189
126, 252, 378
63, 126, 189