Solution
Find the prime factorization of 56,84,112
56 = 2 × 2 × 2 × 7 .........i)
84 = 2 × 2 × 3 × 7..........ii)
112= 2 × 2 × 2 ×2 ×7.........iii)
Multiply each factor the greater number of times it occurs in steps i) , ii) or iii) above to find the lcm:
LCM = 2 × 2 × 2 × 2×3 × 7
=336
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