What is the least common multiple of 9, 18 ,

Peyton Velez

Peyton Velez

Answered question

2022-06-16

What is the least common multiple of 9, 18 , and 21?

Answer & Explanation

pressacvt

pressacvt

Beginner2022-06-17Added 19 answers

Step 1
9 = 3 × 3 
18 = 2 × 3 × 3 
21 = 3 × 7 
When we look at the figures, we now take all of the parameters to their maximum level, so we have one 2, two 3's and one 7:
Step 2
Answer: 2 × 3 × 3 × 7 = 126 
Check: 126 ÷ 9 = 14 = 2 × 7 
126 ÷ 18 = 7 
126 ÷ 21 = 6 = 2 × 3 
Also, none of the three of them share anything in common.

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