36

99

36

99

36÷3

99÷3

12

33

12÷3

33÷3

4

11

or

36

99

2 × 2 × 3 × 3

3 × 3 × 11

2 × 2 × ~~3~~ × ~~3~~

4

11

or

Common Divisors for 36 and 99 are: 3 and 3

Greatest Common Divisor = 3 × 3 = 9

36÷9

99÷9

4

11