naleisarivera211 naleisarivera211

23-03-2017
Mathematics

contestada

What are the first three common multiples of 9 and 21?

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kwissteenuh kwissteenuh

24-03-2017

36, 72, and 108. Pretty sure!

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apologiabiology apologiabiology

24-03-2017

find first common multiplule
factor them
9=3*3
21=3*7

lcm=3*3*7=63

63 times 2=126
63 times 3=189

the first common multipules are 63,126,189

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