How do you get the LCM of 120 25 and 9?

Answer 1

Factor them.

3 x 3 = 9

5 x 5 = 25

2 x 2 x 2 x 3 x 5 = 120

Combine the highest amount of each prime factor.

2 x 2 x 2 x 3 x 3 x 5 x 5 = 1800, the LCM

Answer 2

120 = 2*2*2*3*5

25 = 5*5

9 = 3*3

So LCM = 2*2*2*3*3*5*5 = 1800