What would you like to do?

What is the LCD of 2 4 5?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

The LCD, or Lowest Common Denominator, is the smallest multiple of each of the denominators of a set of fractions. So, assuming that 2, 4 and 5 are denominators of fractions (1/2, 1/4 and 1/5, for example), the LCD would be 20, because 20 is the lowest number that 2, 4 and 5 multiply into. So, your new fractions would be 10/20, 5/20 and 4/20. The purpose of finding the LCD is to allow for multiplying fractions together, or simply comparing them easily.
Thanks for the feedback!

What is the LCD of 4 5 7?

The lowest common dominator is the least common  multiple of the set of fractions. It is used to simplify adding,  subtracting and comparing fractions.   4: 4, 8, 12, 16