Explaination:
The lcm of 90 and 108 is 540.
Steps to find LCM
Find the prime factorization of 90
90 = 2 × 3 × 3 × 5
Find the prime factorization of 108
108 = 2 × 2 × 3 × 3 × 3
Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 3 × 3 × 3 × 5
LCM = 540
