Greatest Common Factor of 56/21, 37/55, 39/42, 42/121

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 56/21, 37/55, 39/42, 42/121

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 56/21,37/55,39/42,42/121

Given fractions are 56/21,37/55,39/42,42/121

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 56,37,39,42

Greatest Common Factor of Numerators i.e. GCF of 56,37,39,42 is 1 .

LCM of Denominators means LCM of 21,55,42,121 as per the given fractions.

LCM of 21,55,42,121 is 25410 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 56,37,39,42

GCF of Fractions 56/21,37/55,39/42,42/121 is 1/25410

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

Greatest Common Factor of 56,37,39,42 By Matching Biggest Common Factor Method

Greatest Common Factor of 56,37,39,42 By Matching Biggest Common Factor Method

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Factors of 37

List of positive integer factors of 37 that divides 37 without a remainder.

1,37

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 56,37,39,42 . The biggest common factor number is the GCF number.
So the greatest common factor 56,37,39,42 is 1.

Lets's calculate LCM of 21,55,42,121

3 21, 55, 42, 121
7 7, 55, 14, 121
11 1, 55, 2, 121
1, 5, 2, 11

∴ So the LCM of the given numbers is 3 x 7 x 11 x 1 x 5 x 2 x 11 = 25410

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/25410

Therefore, the GCF of Fractions 56/21,37/55,39/42,42/121 is 1/25410

Least Common Multiple of 21,55,42,121 with GCF Formula

Least Common Multiple of 21,55,42,121 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 21,55,42,121 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(21,55,42,121) = 1

common factors(in case of two or more numbers have common factors) = 231

GCF(21,55,42,121) x common factors =1 x 231 = 231

LCM(21,55,42,121) = ( 21 × 55 × 42 × 121 ) / 231

LCM(21,55,42,121) = 5869710 / 231

LCM(21,55,42,121) = 25410


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 56/21, 37/55, 39/42, 42/121

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 56/21, 37/55, 39/42, 42/121?

Answer: GCF of Numerators as per given numbers 56/21, 37/55, 39/42, 42/121 is

GCF of Numerators i.e. for 56,37,39,42 is 1

LCM of denominators i.e. for 21,55,42,121 is 25410.

Thus, GCF of Fractions is 1/25410.Finally, GCF of Fractions for 56/21, 37/55, 39/42, 42/121 is 1/25410.