The least common denominator is the least common multiple of the denominators.
The least common multiple of 18 , 56 = 504
There is not a least common multiple of a single number, such as 36, because there cannot be a least common multiple without two or more numbers to compare. Common multiples are multiples that the numbers being compared have in common. The least common multiple is the smallest multiple that all the numbers being compared have in common. Examples: The least common multiple of 27 and 36 is 108. The least common multiple of 32 and 36 is 288. The least common multiple of 36 and 72 is 72.
There is not a least common multiple of a single number, such as 49, because there cannot be a least common multiple without two or more numbers to compare. Common multiples are multiples that the numbers being compared have in common. The least common multiple is the smallest multiple that all the numbers being compared have in common. Examples: The least common multiple of 3 and 49 is 147. The least common multiple of 14 and 49 is 98. The least common multiple of 49 and 196 is 196.
You need at least to numbers to find a least common multiple.
144
36
The lowest common multiple (LCM) is: 306
72
Ninety. 90.
180
The LCM is: 90
144
1680
360
4
240