Greatest Common Factor of 90/21, 81/76, 51/13, 91/83

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 90/21, 81/76, 51/13, 91/83

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 90/21,81/76,51/13,91/83

Given fractions are 90/21,81/76,51/13,91/83

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 90,81,51,91

Greatest Common Factor of Numerators i.e. GCF of 90,81,51,91 is 1 .

LCM of Denominators means LCM of 21,76,13,83 as per the given fractions.

LCM of 21,76,13,83 is 1722084 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 90,81,51,91

GCF of Fractions 90/21,81/76,51/13,91/83 is 1/1722084

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

Greatest Common Factor of 90,81,51,91 By Matching Biggest Common Factor Method

Greatest Common Factor of 90,81,51,91 By Matching Biggest Common Factor Method

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

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Greatest Common Factor

We found the factors 90,81,51,91 . The biggest common factor number is the GCF number.
So the greatest common factor 90,81,51,91 is 1.

Lets's calculate LCM of 21,76,13,83

Given numbers has no common factors except 1. So, there LCM is their product i.e 1722084

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/1722084

Therefore, the GCF of Fractions 90/21,81/76,51/13,91/83 is 1/1722084

Least Common Multiple of 21,76,13,83 with GCF Formula

Least Common Multiple of 21,76,13,83 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 21,76,13,83 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(21,76,13,83) = 1

common factors(in case of two or more numbers have common factors) = 1

GCF(21,76,13,83) x common factors =1 x 1 = 1

LCM(21,76,13,83) = ( 21 × 76 × 13 × 83 ) / 1

LCM(21,76,13,83) = 1722084 / 1

LCM(21,76,13,83) = 1722084


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 90/21, 81/76, 51/13, 91/83

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 90/21, 81/76, 51/13, 91/83?

Answer: GCF of Numerators as per given numbers 90/21, 81/76, 51/13, 91/83 is

GCF of Numerators i.e. for 90,81,51,91 is 1

LCM of denominators i.e. for 21,76,13,83 is 1722084.

Thus, GCF of Fractions is 1/1722084.Finally, GCF of Fractions for 90/21, 81/76, 51/13, 91/83 is 1/1722084.