You can use the definitions of the least common multiple and of the least common denominator to fill the blank space.
The complete statement would be:
The least common denominator is the least common multiple of the
_denominators_ of the fractions.
A least common multiple ( in short, written as LCM) of given numbers is the number which is the least number(smallest) such that it is multiple of all given numbers.
Example, The LCM of 3 and 12 is 12 since 12 is multiple of 12 and 12 is multiple of 3 too.
Multiple of a number is that number times some positive integer.
When you're given many fractions (more than 1 fraction), then the LCM of the denominators of those fractions is called the least common denominator (written as LCD in short). We need this number to add or subtract fractions.
For example, the lcd of 1/2 and 1/4 is 4 since the lcm of 2 and 4 is 4
Thus, the full statement would be:
The least common denominator is the least common multiple of the
_denominators_ of the fractions.
Learn more about least common denominators here:
https://brainly.com/question/931030
