90

48

90

48

48

48

42

48

42

48

1

42

48

1

42÷2

48÷2

1

21

24

1

21÷3

24÷3

1

7

8

or

90

48

48

48

42

48

42

48

1

42

48

1

42

48

1

2 × 3 × 7

2 × 2 × 2 × 2 × 3

1

1

7

8

or

Common Divisors for 42 and 48 are: 2 and 3

Greatest Common Divisor = 2 × 3 = 6

1

90÷6

48÷6

1

7

8