What is the LCM of 70 and 80?
- 666
- 560
- 659
- 888
Explanation
Find the prime factorization of 70
70 = 2 × 5 × 7
Find the prime factorization of 80
80 = 2 × 2 × 2 × 2 × 5
Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 2 × 2 × 5 × 7
LCM = 560
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