A common denominator, though not the least one, is 180.
LCD(3, 12, 15) = 60
The common denominator of any two or more whole numbers will always be 1.
420
LCD(15, 12, 4) = 60.
60 I think
60
The common denominator of 15 and 9 is 45.
The common denominator of any two or more whole numbers, such as 10 13 and 15, will always be one (1) because 'common denominator' refers to the denominators of two or more fractions or mixed numbers, not whole numbers. So, a set of whole numbers (x,x) would have to be converted to their fraction equivalents, i.e., x/1, which will always yield a denominator of 1.
For 7/12 and 7/15 the LCD is 60.
12 and 15 go into the denominator 60. 1 and 3 go into 12 and 15.
What is the lowest common denominator of 15 over 57?