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Earn +20 ptsQ: Is 3 a multiple of 21?
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What is the common multiple of 7 and 9 and 21?
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
What is the LCM of 3 and 21?
The Least Common Multiple (LCM) for 3 21 is 21.
What is the smallest positive integer that is the sum of a multiple of 15 and a multiple of 21?
3 = (3)*15 + (-2)*21
What is the LCM of 21 3 9?
The Least Common Multiple (LCM) for 21 3 9 is 63.
What is the leat common multiple of 7 and 3?
It is: 21
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