How to Find GCF of 808/783, 1640/645?

GCF of 808/783, 1640/645

Created By : Veerendra
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023

Use our free GCF of Fractions Calculator tool to compute the GCF of 808/783, 1640/645 i.e 8/168345 easily. The following is the detailed procedure to determine the greatest common factor of fractions 808/783, 1640/645.

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

What is the GCF of 808/783,1640/645?

Given fractions are 808/783,1640/645

To find the GCF of fractions, we have to find the GCF of numerator numbers and LCM of denominator numbers. Its formula is given by

GCF of Fraction = Greatest Common Factor of Numerator/Least Common Multiple of Denominators

In the fractions 808/783,1640/645, numerators are 808,1640

Denominators are 783,645

The GCF of 808,1640 is 8 .

LCM of 783,645 is 168345.

The greatest common factor of 808/783,1640/645 = [GCF of 808,1640]/[LCM of 783,645]= 8/168345

Therefore, the GCF of 808/783,1640/645 is 8/168345.

Greatest Common Factor of 808,1640

To find the highest common factor of 808,1640, we have to find the factors of both numbers and list the highest common factor.

The factors of 808 are 1, 2, 4, 8, 101, 202, 404, 808

The factors of 1640 are 1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640

The HCF of 808,1640 is 8.

Lets's calculate GCF of 808,1640

Greatest Common Factor (GCF) of 808,1640 By Common Division

2	808, 1640
2	404, 820
2	202, 410
	101, 205

∴ So the GCF of the given numbers is 2 x 2 x 2 = 8

Greatest Common Factor of 808,1640 By Matching Biggest Common Factor Method

Now, list down the factors of 808

1,2,4,8,101,202,404,808

Now, list down the factors of 1640

1,2,4,5,8,10,20,40,41,82,164,205,328,410,820,1640

Greatest Common Factor

We found the factors 808,1640 . The biggest common factor number is the GCF number.
So the greatest common factor 808,1640 is 8.

Lets's calculate LCM of 783,645

Lowest Common Multiple of 783,645 using Common Division

3	783, 645
	261, 215

∴ So the LCM of the given numbers is 3 x 261 x 215 = 168345

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 8/168345

Therefore, the GCF of Fractions 808/783,1640/645 is 8/168345

Least Common Multiple of 783,645 with GCF Formula

The formula of LCM is LCM(a₁,a₂,a₃....,a_n) = ( a₁ × a₂ × a₃ × .... × a_n) / GCF(a₁,a₂,a₃....,a_n) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 783,645 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(783,645) = 3

common factors(in case of two or more numbers have common factors) = 1

GCF(783,645) x common factors =3 x 1 = 3

LCM(783,645) = ( 783 × 645 ) / 3

LCM(783,645) = 505035 / 3

LCM(783,645) = 168345

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FAQs on GCF of Fractions of 808/783, 1640/645

1. What is the HCF of 808,1640?

The HCF of 808,1640 is 8

2. What is the GCF of a fraction?

The GCF of a fraction is defined as the greatest fraction that divides exactly into 2 or more fractions.

3. 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.

4. What is the GCF of Fractions for 808/783, 1640/645?

Answer: GCF of Numerators as per given numbers 808/783, 1640/645 is

GCF of Numerators i.e. for 808,1640 is 8

LCM of denominators i.e. for 783,645 is 168345.

Thus, GCF of Fractions is 8/168345.Finally, GCF of Fractions for 808/783, 1640/645 is 8/168345.