Question

LCM of
70, 140 and 210​

Answer 1

Answer:

Find the prime factorization of 140

140 = 2 × 2 × 5 × 7

Find the prime factorization of 210

210 = 2 × 3 × 5 × 7

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

LCM = 2 × 2 × 3 × 5 × 7

LCM = 420