The Least Common Multiple (LCM) for 9 63 is 63.
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The Least Common Multiple of 21, 63, 147: 441
The LCM of 9 and 21 is 63, which is the multiple of the highest power of prime factors from both numbers, is 63. (3² x 7 = 3 x 3 x 7 = 63).
The least common multipleof 7 and 9 is 63.
Since 63 is a multiple of 9, it is automatically the LCM of this problem.
The LCM is: 2,520