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The greatest common factor of 42 & 15

The greatest common factor of 42 & 15-example-1
User Pillsbur
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1 Answer

5 votes

42 : 2 = 21

21 : 3 = 7

7 : 7 = 1

42 = 2 · 3 · 7

15 : 3 = 5

5 : 5 = 1

15 = 3 · 5

GCF(42, 15) = 3

User Andersson Melo
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