What is the least common multiple of 14, 20, and 15?
2 answers:
14, 15, 20 | 2
7, 15, 10 | 2
7, 15, 5 | 3
7, 5, 5 | 5
7, 1, 1 | 7
1, 1, 1
Answer: 
× 3 × 5 × 7 = 420
Hope it helped,
Happy homework/ study/ exam!
14 = 2 x 7
20 = 2² x 5
15 = 3 x 5
LCM = 2² x 3 x 5 x 7 = 420
Answer: LCM = 420
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