Greatest Common Factor of 19/21, 621/36, 207/315

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 19/21, 621/36, 207/315

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 19/21,621/36,207/315

Given fractions are 19/21,621/36,207/315

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 19,621,207

Greatest Common Factor of Numerators i.e. GCF of 19,621,207 is 1 .

LCM of Denominators means LCM of 21,36,315 as per the given fractions.

LCM of 21,36,315 is 1260 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 19,621,207

GCF of Fractions 19/21,621/36,207/315 is 1/1260

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

Greatest Common Factor of 19,621,207 By Matching Biggest Common Factor Method

Greatest Common Factor of 19,621,207 By Matching Biggest Common Factor Method

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

Factors of 207

List of positive integer factors of 207 that divides 207 without a remainder.

1,3,9,23,69,207

Greatest Common Factor

We found the factors 19,621,207 . The biggest common factor number is the GCF number.
So the greatest common factor 19,621,207 is 1.

Lets's calculate LCM of 21,36,315

3 21, 36, 315
3 7, 12, 105
7 7, 4, 35
1, 4, 5

∴ So the LCM of the given numbers is 3 x 3 x 7 x 1 x 4 x 5 = 1260

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/1260

Therefore, the GCF of Fractions 19/21,621/36,207/315 is 1/1260

Least Common Multiple of 21,36,315 with GCF Formula

Least Common Multiple of 21,36,315 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 21,36,315 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(21,36,315) = 3

common factors(in case of two or more numbers have common factors) = 63

GCF(21,36,315) x common factors =3 x 63 = 189

LCM(21,36,315) = ( 21 × 36 × 315 ) / 189

LCM(21,36,315) = 238140 / 189

LCM(21,36,315) = 1260


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 19/21, 621/36, 207/315

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 19/21, 621/36, 207/315?

Answer: GCF of Numerators as per given numbers 19/21, 621/36, 207/315 is

GCF of Numerators i.e. for 19,621,207 is 1

LCM of denominators i.e. for 21,36,315 is 1260.

Thus, GCF of Fractions is 1/1260.Finally, GCF of Fractions for 19/21, 621/36, 207/315 is 1/1260.