Answer: 20
Explanation:
The least common multiple (LCM) for 5 and 20 will be 20. This is because if you times 5 by 4, you will get 20. Your other number is already 20 so you don't have to touch that number.
where do 5 and 20 meet at the first time, 5, 10, 15, 20, so 20 would be the lcm
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