The LCM is: 63
The LCM is: 63
LCM(9, 21) = 63 so the numbers are 63, 63*2 and 63*3.
No, the only way the GCF and LCM of two numbers can be the same is if the numbers are the same.
The LCM of 63 and 84 is 252.
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.
63 = 3 x 3 x 7, so there are more than one combination: 7 & 9 and 21 & 9. That should be it, unless you want to consider the somewhat trivial combinations : 63 & 21, 63 & 9, 63 & 3, 63 & 7.
7 and 9
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, ...