The answer is 20.
The lowest common denominator of any two positive numbers is always 1.
20 is the lowest common denominator for 4 and 10.
60 is the lowest common multiple of 20 and 15.
60
The lowest common denominator of any set of whole numbers is 1
The answer is 20.
The lowest common denominator of any two positive numbers is always 1.
80
20 is the lowest common denominator for 4 and 10.
60 is the lowest common multiple of 20 and 15.
20
The least common denominator (LCD) is 1.
20
LCD(4, 5) = 20.
60
20, although if you reduced 15/20 to 3/4, the common denominator would be 4.