2 | 4 , 7

2 , 7

2 × 2 × 7 = 28

the lcm of 2 and 7 is 28

2 | 3 , 8

2 | 3 , 4

2 | 3 , 2

3 , 1

2 × 2 × 2 × 3 × 1 = 24

the lcd of 3 and 8 is 24

3 | 6 , 15

2 , 5

3 × 2 × 5 = 30

the lcm of 6 and 15 is 30

2 | 3 , 4 , 5

3 , 2 , 5

2 × 3 × 2 × 5 = 60

the lcm of 3, 4 and 5 is 60

2 | 4 , 8 , 12

2 | 2 , 4 , 6

1 , 2 , 3

2 × 2 × 2 × 3 × 1 = 24

the lcm of 4, 8 and 12 is 24