Greatest Common Factor of 81/43, 22/98, 91/70, 20/15

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 81/43, 22/98, 91/70, 20/15

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 81/43,22/98,91/70,20/15

Given fractions are 81/43,22/98,91/70,20/15

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 81,22,91,20

Greatest Common Factor of Numerators i.e. GCF of 81,22,91,20 is 1 .

LCM of Denominators means LCM of 43,98,70,15 as per the given fractions.

LCM of 43,98,70,15 is 63210 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 81,22,91,20

GCF of Fractions 81/43,22/98,91/70,20/15 is 1/63210

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

Greatest Common Factor of 81,22,91,20 By Matching Biggest Common Factor Method

Greatest Common Factor of 81,22,91,20 By Matching Biggest Common Factor Method

Factors of 81

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

1,3,9,27,81

Factors of 22

List of positive integer factors of 22 that divides 22 without a remainder.

1,2,11,22

Factors of 91

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

1,7,13,91

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 81,22,91,20 . The biggest common factor number is the GCF number.
So the greatest common factor 81,22,91,20 is 1.

Lets's calculate LCM of 43,98,70,15

2 43, 98, 70, 15
5 43, 49, 35, 15
7 43, 49, 7, 3
43, 1, 7, 3

∴ So the LCM of the given numbers is 2 x 5 x 7 x 43 x 1 x 7 x 3 = 63210

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/63210

Therefore, the GCF of Fractions 81/43,22/98,91/70,20/15 is 1/63210

Least Common Multiple of 43,98,70,15 with GCF Formula

Least Common Multiple of 43,98,70,15 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 43,98,70,15 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(43,98,70,15) = 1

common factors(in case of two or more numbers have common factors) = 70

GCF(43,98,70,15) x common factors =1 x 70 = 70

LCM(43,98,70,15) = ( 43 × 98 × 70 × 15 ) / 70

LCM(43,98,70,15) = 4424700 / 70

LCM(43,98,70,15) = 63210


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 81/43, 22/98, 91/70, 20/15

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 81/43, 22/98, 91/70, 20/15?

Answer: GCF of Numerators as per given numbers 81/43, 22/98, 91/70, 20/15 is

GCF of Numerators i.e. for 81,22,91,20 is 1

LCM of denominators i.e. for 43,98,70,15 is 63210.

Thus, GCF of Fractions is 1/63210.Finally, GCF of Fractions for 81/43, 22/98, 91/70, 20/15 is 1/63210.