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

User Robertwest
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2 Answers

4 votes
36, 72, and 108. Pretty sure!
User Sinapse
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3 votes
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
User UDalillu
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