How to Find GCF of 87/10, 771/13, 440/21?

GCF of 87/10, 771/13, 440/21

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 87/10, 771/13, 440/21 i.e 1/2730 easily. The following is the detailed procedure to determine the greatest common factor of fractions 87/10, 771/13, 440/21.

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 87/10,771/13,440/21?

Given fractions are 87/10,771/13,440/21

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 87/10,771/13,440/21, numerators are 87,771,440

Denominators are 10,13,21

The GCF of 87,771,440 is 1 .

LCM of 10,13,21 is 2730.

The greatest common factor of 87/10,771/13,440/21 = [GCF of 87,771,440]/[LCM of 10,13,21]= 1/2730

Therefore, the GCF of 87/10,771/13,440/21 is 1/2730.

Greatest Common Factor of 87,771,440

To find the highest common factor of 87,771,440, we have to find the factors of both numbers and list the highest common factor.

The factors of 87 are 1, 3, 29, 87

The factors of 771 are 1, 3, 257, 771

The factors of 440 are 1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440

The HCF of 87,771,440 is 1.

Lets's calculate GCF of 87,771,440

Greatest Common Factor (GCF) of 87,771,440 By Common Division

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

Greatest Common Factor of 87,771,440 By Matching Biggest Common Factor Method

Now, list down the factors of 87

1,3,29,87

Now, list down the factors of 771

1,3,257,771

Now, list down the factors of 440

1,2,4,5,8,10,11,20,22,40,44,55,88,110,220,440

Greatest Common Factor

We found the factors 87,771,440 . The biggest common factor number is the GCF number.
So the greatest common factor 87,771,440 is 1.

Lets's calculate LCM of 10,13,21

Lowest Common Multiple of 10,13,21 using Common Division

Given numbers has no common factors except 1. So, there LCM is their product i.e 2730

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/2730

Therefore, the GCF of Fractions 87/10,771/13,440/21 is 1/2730

Least Common Multiple of 10,13,21 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 10,13,21 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(10,13,21) = 1

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

GCF(10,13,21) x common factors =1 x 1 = 1

LCM(10,13,21) = ( 10 × 13 × 21 ) / 1

LCM(10,13,21) = 2730 / 1

LCM(10,13,21) = 2730

GCF of Fractions Calculation Examples

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FAQs on GCF of Fractions of 87/10, 771/13, 440/21

1. What is the HCF of 87,771,440?

The HCF of 87,771,440 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 87/10, 771/13, 440/21?

Answer: GCF of Numerators as per given numbers 87/10, 771/13, 440/21 is

GCF of Numerators i.e. for 87,771,440 is 1

LCM of denominators i.e. for 10,13,21 is 2730.

Thus, GCF of Fractions is 1/2730.Finally, GCF of Fractions for 87/10, 771/13, 440/21 is 1/2730.