Question

Using prime factorisation method find the LCM of 42 and 84

Answer 1

Answer:

84

Step-by-step explanation:

Find the prime factorization of 42. 42 = 2 × 3 × 7.

Find the prime factorization of 84. 84 = 2 × 2 × 3 × 7.

LCM = 2 × 2 × 3 × 7.

LCM = 84.