Least Common Multiple of 81/42, 63/13, 74/17, 28/856

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 81/42, 63/13, 74/17, 28/856 quickly i.e. 83916 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 81/42, 63/13, 74/17, 28/856 is 83916.

LCM(81/42, 63/13, 74/17, 28/856) = 83916

LCM of 81/42, 63/13, 74/17, 28/856

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

LCM of:

Least Common Multiple of 81/42,63/13,74/17,28/856

Given numbers are 81/42,63/13,74/17,28/856

Formula to find LCM of Fractions is

LCM = LCM of Numerators/GCF of Denominators

As per the formula LCM of Fractions let’s split into two parts and find the LCM of Numerators and GCF of Denominators

In the given fractions LCM of Numerators means LCM of 81,63,74,28

Least Common Multiple of Numerators i.e. LCM of 81,63,74,28 is 83916.

GCF of Denominators means GCF of 42,13,17,856 as per the given fractions.

GCF of 42,13,17,856 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 81,63,74,28

LCM of Fractions 81/42,63/13,74/17,28/856 is 83916

2 81, 63, 74, 28
3 81, 63, 37, 14
3 27, 21, 37, 14
7 9, 7, 37, 14
9, 1, 37, 2

∴ So the LCM of the given numbers is 2 x 3 x 3 x 7 x 9 x 1 x 37 x 2 = 83916

Least Common Multiple of 81,63,74,28 with GCF Formula

Least Common Multiple of 81,63,74,28 with GCF Formula

The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 81,63,74,28 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(81,63,74,28) = 1

common factors(in case of two or more numbers have common factors) = 126

GCF(81,63,74,28) x common factors =1 x 126 = 126

LCM(81,63,74,28) = ( 81 × 63 × 74 × 28 ) / 126

LCM(81,63,74,28) = 10573416 / 126

LCM(81,63,74,28) = 83916


Lets's calculate GCF of 42,13,17,856

∴ So GCF of numbers is 1 because of no common factors present between them.

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 83916/1

Therefore the LCM of Fractions 81/42,63/13,74/17,28/856 is 83916

Greatest Common Factor of 42,13,17,856 By Matching Biggest Common Factor Method

Greatest Common Factor of 42,13,17,856 By Matching Biggest Common Factor Method

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 856

List of positive integer factors of 856 that divides 856 without a remainder.

1,2,4,8,107,214,428,856

Greatest Common Factor

We found the factors 42,13,17,856 . The biggest common factor number is the GCF number.
So the greatest common factor 42,13,17,856 is 1.


LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

Frequently Asked Questions on Fractional LCM of 81/42, 63/13, 74/17, 28/856

1. How to find LCM in Fractions?

Answer: LCM of fractions can be found using the simple formula LCM of Fractions = LCM of Numerators/GCF of Denominators.

2. What is the LCM of Fractions for 81/42, 63/13, 74/17, 28/856?

Answer: LCM of Numerators as per given numbers 81/42, 63/13, 74/17, 28/856 is

LCM of Numerators i.e. for 81,63,74,28 is 83916

GCF of denominators i.e. for 42,13,17,856 is 1.

Thus, LCM of Fractions is 83916.Finally, LCM of Fractions for 81/42, 63/13, 74/17, 28/856 is 83916.