Answer:

45 and 81

45:  1, 3, 5, 9, 15, 45

81:  1, 3, 9, 27, 81

GCF: 9

6, 15, 48 and 51

6: 1, 2, 3, 6

15: 1, 3, 5, 15

48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

51:  1, 3, 17, 51

GCF: 3

Step-by-step explanation:

GCF(greatest common factor) is the biggest factor that all of the numbers given has.

Ok! Hope it helps!

Find the factors and identify the GCF.

• 45 and 81

Factors of 45: 1, 3, 5, 9, 15 and 45

Factors of 81: 1, 3, 9, 27, 81

• 6, 15, 48 and 51

Factors of 6: 1, 2, 3, 6

Factors of 15: 1, 3, 5, 15

Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

Factors of 51: 1, 3, 17, 51

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