42

56

42

56

42÷2

56÷2

21

28

21÷7

28÷7

3

4

or

42

56

2 × 3 × 7

2 × 2 × 2 × 7

3

4

or

Common Divisors for 42 and 56 are: 2 and 7

Greatest Common Divisor = 2 × 7 = 14

42÷14

56÷14

3

4

See 3/4 as a percent