Denominators are used in fractions. So I guess your answer would be 1 because a whole number can only have 1 as a denominator.
A common denominator, though not the least one, is 180.
420
60 I think
60
LCD(15, 12, 4) = 60.
The least common denominator (LCD) is 1.
the least common multiple of 15,9,and 12 is 180.
There is none because Least Common Denominator (or LCD) refers to the Least Common Multiple (LCM) of the denominators of two or more fractions or mixed numbers. Even if you converted your whole numbers (x) to their fraction equivalents (x/1), the LCD would always be 1.
For 7/12 and 7/15 the LCD is 60.
The least common denominator is 120.
A common denominator, though not the least, is 150.
15