Question

find the LCM of 18 and 45​

Answer 1

90 is the correct answer

Answer 2

The L.C.M. of 18 and 45 is 90.

Steps to find LCM

Find the prime factorization of 18

18 = 2 × 3 × 3

Find the prime factorization of 45

45 = 3 × 3 × 5

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 2 × 3 × 3 × 5

LCM = 90

Hope it is helpful.....