Question

find the lcm of 15,18 and 45​

Answer 1

Answer:

The lcm of 15,18 and 45​ is 90.

Step-by-step explanation:

The prime factors of 15 are 3 and 5.

The prime factors of 18 are 2, 3 and 3.

The prime factors of 45 are 3, 3 and 5.

The least common multiple is the product of all factors in the greatest number of their occurrence.

LCM = 2  × 3  × 3  × 5

LCM = 90

The least common multiple of 15, 18 and 45 is 90.