How to Find GCF of 65/80, 40/83, 561/78?

GCF of 65/80, 40/83, 561/78

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 65/80, 40/83, 561/78 i.e 1/258960 easily. The following is the detailed procedure to determine the greatest common factor of fractions 65/80, 40/83, 561/78.

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 65/80,40/83,561/78?

Given fractions are 65/80,40/83,561/78

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 65/80,40/83,561/78, numerators are 65,40,561

Denominators are 80,83,78

The GCF of 65,40,561 is 1 .

LCM of 80,83,78 is 258960.

The greatest common factor of 65/80,40/83,561/78 = [GCF of 65,40,561]/[LCM of 80,83,78]= 1/258960

Therefore, the GCF of 65/80,40/83,561/78 is 1/258960.

Greatest Common Factor of 65,40,561

To find the highest common factor of 65,40,561, we have to find the factors of both numbers and list the highest common factor.

The factors of 65 are 1, 5, 13, 65

The factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40

The factors of 561 are 1, 3, 11, 17, 33, 51, 187, 561

The HCF of 65,40,561 is 1.

Lets's calculate GCF of 65,40,561

Greatest Common Factor (GCF) of 65,40,561 By Common Division

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

Greatest Common Factor of 65,40,561 By Matching Biggest Common Factor Method

Now, list down the factors of 65

1,5,13,65

Now, list down the factors of 40

1,2,4,5,8,10,20,40

Now, list down the factors of 561

1,3,11,17,33,51,187,561

Greatest Common Factor

We found the factors 65,40,561 . The biggest common factor number is the GCF number.
So the greatest common factor 65,40,561 is 1.

Lets's calculate LCM of 80,83,78

Lowest Common Multiple of 80,83,78 using Common Division

2	80, 83, 78
	40, 83, 39

∴ So the LCM of the given numbers is 2 x 40 x 83 x 39 = 258960

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/258960

Therefore, the GCF of Fractions 65/80,40/83,561/78 is 1/258960

Least Common Multiple of 80,83,78 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 80,83,78 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(80,83,78) = 1

common factors(in case of two or more numbers have common factors) = 2

GCF(80,83,78) x common factors =1 x 2 = 2

LCM(80,83,78) = ( 80 × 83 × 78 ) / 2

LCM(80,83,78) = 517920 / 2

LCM(80,83,78) = 258960

GCF of Fractions Calculation Examples

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FAQs on GCF of Fractions of 65/80, 40/83, 561/78

1. What is the HCF of 65,40,561?

The HCF of 65,40,561 is 1

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 65/80, 40/83, 561/78?

Answer: GCF of Numerators as per given numbers 65/80, 40/83, 561/78 is

GCF of Numerators i.e. for 65,40,561 is 1

LCM of denominators i.e. for 80,83,78 is 258960.

Thus, GCF of Fractions is 1/258960.Finally, GCF of Fractions for 65/80, 40/83, 561/78 is 1/258960.