Least Common Multiple of 42/57, 12/39, 64/17, 28/817

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 42/57, 12/39, 64/17, 28/817 quickly i.e. 1344 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 42/57, 12/39, 64/17, 28/817 is 1344.

LCM(42/57, 12/39, 64/17, 28/817) = 1344

LCM of 42/57, 12/39, 64/17, 28/817

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 42/57,12/39,64/17,28/817

Given numbers are 42/57,12/39,64/17,28/817

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 42,12,64,28

Least Common Multiple of Numerators i.e. LCM of 42,12,64,28 is 1344.

GCF of Denominators means GCF of 57,39,17,817 as per the given fractions.

GCF of 57,39,17,817 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 42,12,64,28

LCM of Fractions 42/57,12/39,64/17,28/817 is 1344

2 42, 12, 64, 28
2 21, 6, 32, 14
3 21, 3, 16, 7
7 7, 1, 16, 7
1, 1, 16, 1

∴ So the LCM of the given numbers is 2 x 2 x 3 x 7 x 1 x 1 x 16 x 1 = 1344

Least Common Multiple of 42,12,64,28 with GCF Formula

Least Common Multiple of 42,12,64,28 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 42,12,64,28 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(42,12,64,28) = 2

common factors(in case of two or more numbers have common factors) = 336

GCF(42,12,64,28) x common factors =2 x 336 = 672

LCM(42,12,64,28) = ( 42 × 12 × 64 × 28 ) / 672

LCM(42,12,64,28) = 903168 / 672

LCM(42,12,64,28) = 1344


Lets's calculate GCF of 57,39,17,817

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

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 1344/1

Therefore the LCM of Fractions 42/57,12/39,64/17,28/817 is 1344

Greatest Common Factor of 57,39,17,817 By Matching Biggest Common Factor Method

Greatest Common Factor of 57,39,17,817 By Matching Biggest Common Factor Method

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 17

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

1,17

Factors of 817

List of positive integer factors of 817 that divides 817 without a remainder.

1,19,43,817

Greatest Common Factor

We found the factors 57,39,17,817 . The biggest common factor number is the GCF number.
So the greatest common factor 57,39,17,817 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 42/57, 12/39, 64/17, 28/817

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 42/57, 12/39, 64/17, 28/817?

Answer: LCM of Numerators as per given numbers 42/57, 12/39, 64/17, 28/817 is

LCM of Numerators i.e. for 42,12,64,28 is 1344

GCF of denominators i.e. for 57,39,17,817 is 1.

Thus, LCM of Fractions is 1344.Finally, LCM of Fractions for 42/57, 12/39, 64/17, 28/817 is 1344.