8 , 28

Find the common factors for the numerical part:

8,28

The factors for 8 are all numbers between 1 and 8, which divide 8 evenly.

Check numbers between 1 and 8

Find the factor pairs of 8 where x⋅y=8.

xy1824

List the factors for 8.

1,2,4,8

1,2,4,8

The factors for 28 are all numbers between 1 and 28, which divide 28 evenly.

Check numbers between 1 and 28

Find the factor pairs of 28 where x⋅y=28.

xy12821447

List the factors for 28.

1,2,4,7,14,28

1,2,4,7,14,28

List all the factors for 8,28 to find the common factors.

8: 1,2,4,8

28: 1,2,4,7,14,28

The common factors for 8,28 are 1,2,4.

1,2,4

The GCF (HCF) of the numerical factors 1,2,4 is 4.

4

Find the HCF 8 , 28