Greatest Common Factor of 28/19, 30/10, 61/61, 70/86

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 28/19, 30/10, 61/61, 70/86

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 28/19,30/10,61/61,70/86

Given fractions are 28/19,30/10,61/61,70/86

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 28,30,61,70

Greatest Common Factor of Numerators i.e. GCF of 28,30,61,70 is 1 .

LCM of Denominators means LCM of 19,10,61,86 as per the given fractions.

LCM of 19,10,61,86 is 498370 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 28,30,61,70

GCF of Fractions 28/19,30/10,61/61,70/86 is 1/498370

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

Greatest Common Factor of 28,30,61,70 By Matching Biggest Common Factor Method

Greatest Common Factor of 28,30,61,70 By Matching Biggest Common Factor Method

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Greatest Common Factor

We found the factors 28,30,61,70 . The biggest common factor number is the GCF number.
So the greatest common factor 28,30,61,70 is 1.

Lets's calculate LCM of 19,10,61,86

2 19, 10, 61, 86
19, 5, 61, 43

∴ So the LCM of the given numbers is 2 x 19 x 5 x 61 x 43 = 498370

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/498370

Therefore, the GCF of Fractions 28/19,30/10,61/61,70/86 is 1/498370

Least Common Multiple of 19,10,61,86 with GCF Formula

Least Common Multiple of 19,10,61,86 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 19,10,61,86 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(19,10,61,86) = 1

common factors(in case of two or more numbers have common factors) = 2

GCF(19,10,61,86) x common factors =1 x 2 = 2

LCM(19,10,61,86) = ( 19 × 10 × 61 × 86 ) / 2

LCM(19,10,61,86) = 996740 / 2

LCM(19,10,61,86) = 498370


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 28/19, 30/10, 61/61, 70/86

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 28/19, 30/10, 61/61, 70/86?

Answer: GCF of Numerators as per given numbers 28/19, 30/10, 61/61, 70/86 is

GCF of Numerators i.e. for 28,30,61,70 is 1

LCM of denominators i.e. for 19,10,61,86 is 498370.

Thus, GCF of Fractions is 1/498370.Finally, GCF of Fractions for 28/19, 30/10, 61/61, 70/86 is 1/498370.