Greatest Common Factor of 59/78, 81/39, 51/39, 17/15

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 59/78, 81/39, 51/39, 17/15

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 59/78,81/39,51/39,17/15

Given fractions are 59/78,81/39,51/39,17/15

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 59,81,51,17

Greatest Common Factor of Numerators i.e. GCF of 59,81,51,17 is 1 .

LCM of Denominators means LCM of 78,39,39,15 as per the given fractions.

LCM of 78,39,39,15 is 390 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 59,81,51,17

GCF of Fractions 59/78,81/39,51/39,17/15 is 1/390

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

Greatest Common Factor of 59,81,51,17 By Matching Biggest Common Factor Method

Greatest Common Factor of 59,81,51,17 By Matching Biggest Common Factor Method

Factors of 59

List of positive integer factors of 59 that divides 59 without a remainder.

1,59

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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Greatest Common Factor

We found the factors 59,81,51,17 . The biggest common factor number is the GCF number.
So the greatest common factor 59,81,51,17 is 1.

Lets's calculate LCM of 78,39,39,15

3 78, 39, 39, 15
13 26, 13, 13, 5
2, 1, 1, 5

∴ So the LCM of the given numbers is 3 x 13 x 2 x 1 x 1 x 5 = 390

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/390

Therefore, the GCF of Fractions 59/78,81/39,51/39,17/15 is 1/390

Least Common Multiple of 78,39,39,15 with GCF Formula

Least Common Multiple of 78,39,39,15 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 78,39,39,15 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(78,39,39,15) = 3

common factors(in case of two or more numbers have common factors) = 1521

GCF(78,39,39,15) x common factors =3 x 1521 = 4563

LCM(78,39,39,15) = ( 78 × 39 × 39 × 15 ) / 4563

LCM(78,39,39,15) = 1779570 / 4563

LCM(78,39,39,15) = 390


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 59/78, 81/39, 51/39, 17/15

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 59/78, 81/39, 51/39, 17/15?

Answer: GCF of Numerators as per given numbers 59/78, 81/39, 51/39, 17/15 is

GCF of Numerators i.e. for 59,81,51,17 is 1

LCM of denominators i.e. for 78,39,39,15 is 390.

Thus, GCF of Fractions is 1/390.Finally, GCF of Fractions for 59/78, 81/39, 51/39, 17/15 is 1/390.