Greatest Common Factor of 31/65, 38/45, 79/31, 90/67

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 31/65, 38/45, 79/31, 90/67

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 31/65,38/45,79/31,90/67

Given fractions are 31/65,38/45,79/31,90/67

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 31,38,79,90

Greatest Common Factor of Numerators i.e. GCF of 31,38,79,90 is 1 .

LCM of Denominators means LCM of 65,45,31,67 as per the given fractions.

LCM of 65,45,31,67 is 1215045 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 31,38,79,90

GCF of Fractions 31/65,38/45,79/31,90/67 is 1/1215045

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

Greatest Common Factor of 31,38,79,90 By Matching Biggest Common Factor Method

Greatest Common Factor of 31,38,79,90 By Matching Biggest Common Factor Method

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 79

List of positive integer factors of 79 that divides 79 without a remainder.

1,79

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Greatest Common Factor

We found the factors 31,38,79,90 . The biggest common factor number is the GCF number.
So the greatest common factor 31,38,79,90 is 1.

Lets's calculate LCM of 65,45,31,67

5 65, 45, 31, 67
13, 9, 31, 67

∴ So the LCM of the given numbers is 5 x 13 x 9 x 31 x 67 = 1215045

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/1215045

Therefore, the GCF of Fractions 31/65,38/45,79/31,90/67 is 1/1215045

Least Common Multiple of 65,45,31,67 with GCF Formula

Least Common Multiple of 65,45,31,67 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 65,45,31,67 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(65,45,31,67) = 1

common factors(in case of two or more numbers have common factors) = 5

GCF(65,45,31,67) x common factors =1 x 5 = 5

LCM(65,45,31,67) = ( 65 × 45 × 31 × 67 ) / 5

LCM(65,45,31,67) = 6075225 / 5

LCM(65,45,31,67) = 1215045


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 31/65, 38/45, 79/31, 90/67

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 31/65, 38/45, 79/31, 90/67?

Answer: GCF of Numerators as per given numbers 31/65, 38/45, 79/31, 90/67 is

GCF of Numerators i.e. for 31,38,79,90 is 1

LCM of denominators i.e. for 65,45,31,67 is 1215045.

Thus, GCF of Fractions is 1/1215045.Finally, GCF of Fractions for 31/65, 38/45, 79/31, 90/67 is 1/1215045.