10 and 63
The LCM of 14 and 63 is 126. The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. The greatest common factor of 14 and 63 is 7, so the least common multiple is 14 x 63 ÷ 7 = 126.
The least common multiple of the numbers 54, 63 and 108 is 756.
First you need to break the numbers into their prime factors. In this case we get: 63 = 3x3x7 21 = 3x7 The next step is to identify any common prime factors. In this case both have a 3 and a 7 as prime factors. Multiply these together and you get 3x7 = 21. This is the HCF. To find the LCM you just multiply the numbers together and divide by the HCF. 63x21/21 = 63 Thus 63 is the LCM.
6 and 12
7 and 9
The LCM of 7 and 9 is 63.
10 and 63
The LCM of 7 and 9 is 63.
The LCM of 7 and 9 is 63.
9 and 21
You don't. You need at least two numbers to find an LCM.
The least common multiple is the smallest number that is multiple of two or more numbers. 21: 21, 42, 63 63: 63 The LCM of 21 and 63 is 63.
Since 63 is a multiple of 9, it is automatically the LCM.
The LCM is: 63
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).
There cannot be a least common multiple if there are not at least two numbers. The least common multiple is the smallest number that is a multiple of the two (or more) numbers. For example, the least common multiple of 4 and 6 is 12. The multiples of 63 are 63, 126, 189, 252, 315, 378, 441, ...