Greatest Common Factor of 11/31, 39/51, 55/28, 20/12

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 11/31, 39/51, 55/28, 20/12

Enter two or more fractions separated by "commas"

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

GCF of:

Greatest Common Factor of 11/31,39/51,55/28,20/12

Given fractions are 11/31,39/51,55/28,20/12

Formula to find GCF of Fractions is

GCF = GCF of Numerators/LCM of Denominators

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

In the given fractions GCF of Numerators means GCF of 11,39,55,20

Greatest Common Factor of Numerators i.e. GCF of 11,39,55,20 is 1 .

LCM of Denominators means LCM of 31,51,28,12 as per the given fractions.

LCM of 31,51,28,12 is 44268 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 11,39,55,20

GCF of Fractions 11/31,39/51,55/28,20/12 is 1/44268

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

Greatest Common Factor of 11,39,55,20 By Matching Biggest Common Factor Method

Greatest Common Factor of 11,39,55,20 By Matching Biggest Common Factor Method

Factors of 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Factors of 39

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

1,3,13,39

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Greatest Common Factor

We found the factors 11,39,55,20 . The biggest common factor number is the GCF number.
So the greatest common factor 11,39,55,20 is 1.

Lets's calculate LCM of 31,51,28,12

2 31, 51, 28, 12
2 31, 51, 14, 6
3 31, 51, 7, 3
31, 17, 7, 1

∴ So the LCM of the given numbers is 2 x 2 x 3 x 31 x 17 x 7 x 1 = 44268

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/44268

Therefore, the GCF of Fractions 11/31,39/51,55/28,20/12 is 1/44268

Least Common Multiple of 31,51,28,12 with GCF Formula

Least Common Multiple of 31,51,28,12 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 31,51,28,12 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(31,51,28,12) = 1

common factors(in case of two or more numbers have common factors) = 12

GCF(31,51,28,12) x common factors =1 x 12 = 12

LCM(31,51,28,12) = ( 31 × 51 × 28 × 12 ) / 12

LCM(31,51,28,12) = 531216 / 12

LCM(31,51,28,12) = 44268


GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

Frequently Asked Questions on Fractional GCF of 11/31, 39/51, 55/28, 20/12

1. How to find GCF in Fractions?

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

2. What is the GCF of Fractions for 11/31, 39/51, 55/28, 20/12?

Answer: GCF of Numerators as per given numbers 11/31, 39/51, 55/28, 20/12 is

GCF of Numerators i.e. for 11,39,55,20 is 1

LCM of denominators i.e. for 31,51,28,12 is 44268.

Thus, GCF of Fractions is 1/44268.Finally, GCF of Fractions for 11/31, 39/51, 55/28, 20/12 is 1/44268.