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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.

More answers

The least common multiple of 2, 4, and 7 is 28.

LCD(4, 7, 12) = 84

Lvl 2

84

Lvl 1

WOW BOB! THANKS!

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NO PROBLEMO

28

Q: What is the lcd of 7 4 and 2?

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Related questions

LCD(7, 4) = 28

28.

LCD(7, 9, 2) = 126.

LCD(4, 2, 9) = 36

They're all prime numbers; 1 is the lcd * * * * * Sorry about the ignorance that permeates WA. First, they are not all primes, since 4 = 2*2 Also, the above answer refers to the HCF, not the LCD. The correct answer is 84

28

28

LCD(3, 5, 4, 2) = 60

84

It is: 364

84

14