LCD of 3, 13, 21 Calculator

Arrange the Inputs 3,13,21 in a horizontal line separated by commas and divide them with a prime number. Note the quotients in the next row and divide with quotients with prime numbers again. Continue the process until you have all co primes in the last.

As all the numbers left in the last row are co primes you need not do the common division process further.

To obtain the Least Common Denominator, multiply the prime numbers with which you have divided the given numbers and the co primes in the last row i.e. 3 x 1 x 13 x 7 = 273

Therefore, LCD of 3,13,21 is 273

Step1:

Let's calculate the LCD of first two numbers

The formula of LCD is LCD(a,b) = ( a x b) / GCF(a,b)

GCF(3, 13) = 1

LCD(3, 13) = ( 3 x 13 ) / 1

LCD(3, 13) = 39 / 1

LCD(3, 13) = 39

Step2:

Here we consider the LCD from the above i.e. 39 as first number and the next as 21

The formula of LCD is LCD(a,b) = ( a x b) / GCF(a,b)

GCF(39, 21) = 3

LCD(39, 21) = ( 39 x 21 ) / 3

LCD(39, 21) = 819 / 3

LCD(39, 21) = 273

LCD of 3,13,21 is 273

Here are some samples of LCD of Numbers calculations.

• LCD of 1, 94, 87
• LCD of 9, 15, 91
• LCD of 8, 58, 65
• LCD of 3, 47, 50
• LCD of 4, 74, 35

1. What is the LCD of 3, 13, 21?

Answer: LCD of 3, 13, 21 is 273.

2. How to find LCD of 3, 13, 21 on a calculator?

Answer: You can find LCD of 3, 13, 21 by simply giving the inputs in the input field and clicking on the Calculator button next to it to get the concerned Least Common Denominator.

3. How to Find the LCD of 3, 13, 21?

Least Common Denominator of 3, 13, 21.

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors with last row quotient of common division that is LCD(3, 13, 21) = 273.