Greatest Common Factor of 12/55, 91/36, 39/45, 42/145

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 12/55, 91/36, 39/45, 42/145

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 12/55,91/36,39/45,42/145

Given fractions are 12/55,91/36,39/45,42/145

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 12,91,39,42

Greatest Common Factor of Numerators i.e. GCF of 12,91,39,42 is 1 .

LCM of Denominators means LCM of 55,36,45,145 as per the given fractions.

LCM of 55,36,45,145 is 57420 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 12,91,39,42

GCF of Fractions 12/55,91/36,39/45,42/145 is 1/57420

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

Greatest Common Factor of 12,91,39,42 By Matching Biggest Common Factor Method

Greatest Common Factor of 12,91,39,42 By Matching Biggest Common Factor Method

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 91

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

1,7,13,91

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Greatest Common Factor

We found the factors 12,91,39,42 . The biggest common factor number is the GCF number.
So the greatest common factor 12,91,39,42 is 1.

Lets's calculate LCM of 55,36,45,145

3 55, 36, 45, 145
3 55, 12, 15, 145
5 55, 4, 5, 145
11, 4, 1, 29

∴ So the LCM of the given numbers is 3 x 3 x 5 x 11 x 4 x 1 x 29 = 57420

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/57420

Therefore, the GCF of Fractions 12/55,91/36,39/45,42/145 is 1/57420

Least Common Multiple of 55,36,45,145 with GCF Formula

Least Common Multiple of 55,36,45,145 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 55,36,45,145 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(55,36,45,145) = 1

common factors(in case of two or more numbers have common factors) = 225

GCF(55,36,45,145) x common factors =1 x 225 = 225

LCM(55,36,45,145) = ( 55 × 36 × 45 × 145 ) / 225

LCM(55,36,45,145) = 12919500 / 225

LCM(55,36,45,145) = 57420


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 12/55, 91/36, 39/45, 42/145

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 12/55, 91/36, 39/45, 42/145?

Answer: GCF of Numerators as per given numbers 12/55, 91/36, 39/45, 42/145 is

GCF of Numerators i.e. for 12,91,39,42 is 1

LCM of denominators i.e. for 55,36,45,145 is 57420.

Thus, GCF of Fractions is 1/57420.Finally, GCF of Fractions for 12/55, 91/36, 39/45, 42/145 is 1/57420.