naleisarivera211
naleisarivera211 naleisarivera211
  • 23-03-2017
  • Mathematics
contestada

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

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kwissteenuh
kwissteenuh kwissteenuh
  • 24-03-2017
36, 72, and 108. Pretty sure!
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apologiabiology
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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