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What is the LCM of 9 and 21?
What is the LCM of 9 and 21?
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Practice Questions
1 question
Q1
What is the LCM of 9 and 21?
63
189
27
42
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The LCM of 9 and 21 is 63, as it is the smallest number that is a multiple of both.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the LCM of 9 and 21?
Solution:
The LCM of 9 and 21 is 63, as it is the smallest number that is a multiple of both.
Steps: 4
Show Steps
Step 1: List the multiples of 9. The first few multiples are 9, 18, 27, 36, 45, 54, 63, ...
Step 2: List the multiples of 21. The first few multiples are 21, 42, 63, 84, ...
Step 3: Look for the smallest number that appears in both lists of multiples. The common multiples are 63, ...
Step 4: Identify the smallest common multiple. The smallest common multiple is 63.
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