Greatest Common Factor of 21/40, 21/636, 699/120

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 21/40, 21/636, 699/120

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 21/40,21/636,699/120

Given fractions are 21/40,21/636,699/120

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 21,21,699

Greatest Common Factor of Numerators i.e. GCF of 21,21,699 is 3 .

LCM of Denominators means LCM of 40,636,120 as per the given fractions.

LCM of 40,636,120 is 6360 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 21,21,699

GCF of Fractions 21/40,21/636,699/120 is 3/6360

3 21, 21, 699
7, 7, 233

∴ So the GCF of the given numbers is 3 = 3

Greatest Common Factor of 21,21,699 By Matching Biggest Common Factor Method

Greatest Common Factor of 21,21,699 By Matching Biggest Common Factor Method

Factors of 21

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

1,3,7,21

Factors of 21

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

1,3,7,21

Factors of 699

List of positive integer factors of 699 that divides 699 without a remainder.

1,3,233,699

Greatest Common Factor

We found the factors 21,21,699 . The biggest common factor number is the GCF number.
So the greatest common factor 21,21,699 is 3.

Lets's calculate LCM of 40,636,120

2 40, 636, 120
2 20, 318, 60
2 10, 159, 30
3 5, 159, 15
5 5, 53, 5
1, 53, 1

∴ So the LCM of the given numbers is 2 x 2 x 2 x 3 x 5 x 1 x 53 x 1 = 6360

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 3/6360

Therefore, the GCF of Fractions 21/40,21/636,699/120 is 3/6360

Least Common Multiple of 40,636,120 with GCF Formula

Least Common Multiple of 40,636,120 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 40,636,120 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(40,636,120) = 4

common factors(in case of two or more numbers have common factors) = 120

GCF(40,636,120) x common factors =4 x 120 = 480

LCM(40,636,120) = ( 40 × 636 × 120 ) / 480

LCM(40,636,120) = 3052800 / 480

LCM(40,636,120) = 6360


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 21/40, 21/636, 699/120

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 21/40, 21/636, 699/120?

Answer: GCF of Numerators as per given numbers 21/40, 21/636, 699/120 is

GCF of Numerators i.e. for 21,21,699 is 3

LCM of denominators i.e. for 40,636,120 is 6360.

Thus, GCF of Fractions is 3/6360.Finally, GCF of Fractions for 21/40, 21/636, 699/120 is 3/6360.