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Q: Common multiple of 9 and 21?

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The least common multiple of 7 , 9 , 21 = 63

least common multiple of 3 9 and 21 is 63.

A common multiple of 9 and 21 is a number of the form 63*k where k is an integer.

The Least Common Multiple (LCM) for 9 10 12 21 is 1,260.

The Least Common Multiple (LCM) for 9 21 10 12 is 1,260.

The Least Common Multiple (LCM) of (9,15 and 21) is 315.

the next common multiple of 9and 21is126

21 = 7 x 3 , 9 = 3 x 3 ; for the Least Common Multiple (LCM), 21 already is a multiple of 7. 21 & 9 have a common factor of 3, so LCM = 21 x 3 = 63

Any multiple of 63.

63

63

33

63

3

The LCM of 9, 21, and 63 is 6363

The LCM of 6, 9, and 21 is 126

1260

252

180

63

The LCM is: 63

126

126

63

Their lowest common multiple is 63.