15 , 75

Find the common factors for the numerical part:

15,75

The factors for 15 are all numbers between 1 and 15, which divide 15 evenly.

Check numbers between 1 and 15

Find the factor pairs of 15 where x⋅y=15.

xy11535

List the factors for 15.

1,3,5,15

1,3,5,15

The factors for 75 are all numbers between 1 and 75, which divide 75 evenly.

Check numbers between 1 and 75

Find the factor pairs of 75 where x⋅y=75.

xy175325515

List the factors for 75.

1,3,5,15,25,75

1,3,5,15,25,75

List all the factors for 15,75 to find the common factors.

15: 1,3,5,15

75: 1,3,5,15,25,75

The common factors for 15,75 are 1,3,5,15.

1,3,5,15

The GCF (HCF) of the numerical factors 1,3,5,15 is 15.

15

Find the GCF 15 , 75