LCM of 21 & 49 is 147, so all multiples of 147 are common multiples of 21 & 49.
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∙ 2009-12-22 13:19:29LCM(21, 49, 56) = 1176
Multiples 21: 1,3,7,21Multiples 49: 1,7,49
Common multiples include 1176, 2352, 3528 and so on.
147, 294, 441 and so on.
147, 294, 441 and so on.
Multiples of seven include 7, 14, 21, 28, 35, 42, 49 and so on. For them to be common, they need to be compared to another set of multiples.
Multiples of 49 include 49, 98, 147, 196 and so on. For them to be common, they need to be compared to another set of multiples.
21, 28, 35, 42, 49
It is 7!
1 and 7
1 and 7
Multiples of 21 include 21, 42, 63, 84 and so on. For them to be common, they need to be compared to another set of multiples.