42

70

42

70

42÷2

70÷2

21

35

21÷7

35÷7

3

5

or

42

70

2 × 3 × 7

2 × 5 × 7

3

5

or

Common Divisors for 42 and 70 are: 2 and 7

Greatest Common Divisor = 2 × 7 = 14

42÷14

70÷14

3

5

See 3/5 as a percent