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22 June, 16:46

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

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  1. 22 June, 16:55
    0
    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
  2. 22 June, 17:05
    0
    36, 72, and 108. Pretty sure!
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