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22 December, 17:04

What is gcf of 21 42 and 63

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  1. 22 December, 17:07
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    Ther gcf of 21, 42, and 63 is 21
  2. 22 December, 17:32
    0
    7 ... if you list the factors of all 3 of this number ... you will see 7 is the common factor ... because:

    7x3=21

    7x6=42

    7x9 = 63
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