Greatest Common Factor of 38/19, 88/42, 42/84, 21/291

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 38/19, 88/42, 42/84, 21/291

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 38/19,88/42,42/84,21/291

Given fractions are 38/19,88/42,42/84,21/291

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 38,88,42,21

Greatest Common Factor of Numerators i.e. GCF of 38,88,42,21 is 1 .

LCM of Denominators means LCM of 19,42,84,291 as per the given fractions.

LCM of 19,42,84,291 is 154812 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 38,88,42,21

GCF of Fractions 38/19,88/42,42/84,21/291 is 1/154812

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

Greatest Common Factor of 38,88,42,21 By Matching Biggest Common Factor Method

Greatest Common Factor of 38,88,42,21 By Matching Biggest Common Factor Method

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 88

List of positive integer factors of 88 that divides 88 without a remainder.

1,2,4,8,11,22,44,88

Factors of 42

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

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

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Greatest Common Factor

We found the factors 38,88,42,21 . The biggest common factor number is the GCF number.
So the greatest common factor 38,88,42,21 is 1.

Lets's calculate LCM of 19,42,84,291

2 19, 42, 84, 291
3 19, 21, 42, 291
7 19, 7, 14, 97
19, 1, 2, 97

∴ So the LCM of the given numbers is 2 x 3 x 7 x 19 x 1 x 2 x 97 = 154812

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/154812

Therefore, the GCF of Fractions 38/19,88/42,42/84,21/291 is 1/154812

Least Common Multiple of 19,42,84,291 with GCF Formula

Least Common Multiple of 19,42,84,291 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 19,42,84,291 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(19,42,84,291) = 1

common factors(in case of two or more numbers have common factors) = 126

GCF(19,42,84,291) x common factors =1 x 126 = 126

LCM(19,42,84,291) = ( 19 × 42 × 84 × 291 ) / 126

LCM(19,42,84,291) = 19506312 / 126

LCM(19,42,84,291) = 154812


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 38/19, 88/42, 42/84, 21/291

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 38/19, 88/42, 42/84, 21/291?

Answer: GCF of Numerators as per given numbers 38/19, 88/42, 42/84, 21/291 is

GCF of Numerators i.e. for 38,88,42,21 is 1

LCM of denominators i.e. for 19,42,84,291 is 154812.

Thus, GCF of Fractions is 1/154812.Finally, GCF of Fractions for 38/19, 88/42, 42/84, 21/291 is 1/154812.