Greatest Common Factor of 78/56, 89/15, 57/72, 998/13

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 78/56, 89/15, 57/72, 998/13

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 78/56,89/15,57/72,998/13

Given fractions are 78/56,89/15,57/72,998/13

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 78,89,57,998

Greatest Common Factor of Numerators i.e. GCF of 78,89,57,998 is 1 .

LCM of Denominators means LCM of 56,15,72,13 as per the given fractions.

LCM of 56,15,72,13 is 32760 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 78,89,57,998

GCF of Fractions 78/56,89/15,57/72,998/13 is 1/32760

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

Greatest Common Factor of 78,89,57,998 By Matching Biggest Common Factor Method

Greatest Common Factor of 78,89,57,998 By Matching Biggest Common Factor Method

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 998

List of positive integer factors of 998 that divides 998 without a remainder.

1,2,499,998

Greatest Common Factor

We found the factors 78,89,57,998 . The biggest common factor number is the GCF number.
So the greatest common factor 78,89,57,998 is 1.

Lets's calculate LCM of 56,15,72,13

2 56, 15, 72, 13
2 28, 15, 36, 13
2 14, 15, 18, 13
3 7, 15, 9, 13
7, 5, 3, 13

∴ So the LCM of the given numbers is 2 x 2 x 2 x 3 x 7 x 5 x 3 x 13 = 32760

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/32760

Therefore, the GCF of Fractions 78/56,89/15,57/72,998/13 is 1/32760

Least Common Multiple of 56,15,72,13 with GCF Formula

Least Common Multiple of 56,15,72,13 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 56,15,72,13 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(56,15,72,13) = 1

common factors(in case of two or more numbers have common factors) = 24

GCF(56,15,72,13) x common factors =1 x 24 = 24

LCM(56,15,72,13) = ( 56 × 15 × 72 × 13 ) / 24

LCM(56,15,72,13) = 786240 / 24

LCM(56,15,72,13) = 32760


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 78/56, 89/15, 57/72, 998/13

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 78/56, 89/15, 57/72, 998/13?

Answer: GCF of Numerators as per given numbers 78/56, 89/15, 57/72, 998/13 is

GCF of Numerators i.e. for 78,89,57,998 is 1

LCM of denominators i.e. for 56,15,72,13 is 32760.

Thus, GCF of Fractions is 1/32760.Finally, GCF of Fractions for 78/56, 89/15, 57/72, 998/13 is 1/32760.