How to Find GCF of 83/85, 54/68, 618/20?

GCF of 83/85, 54/68, 618/20

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 83/85, 54/68, 618/20 i.e 1/340 easily. The following is the detailed procedure to determine the greatest common factor of fractions 83/85, 54/68, 618/20.

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 83/85,54/68,618/20?

Given fractions are 83/85,54/68,618/20

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 83/85,54/68,618/20, numerators are 83,54,618

Denominators are 85,68,20

The GCF of 83,54,618 is 1 .

LCM of 85,68,20 is 340.

The greatest common factor of 83/85,54/68,618/20 = [GCF of 83,54,618]/[LCM of 85,68,20]= 1/340

Therefore, the GCF of 83/85,54/68,618/20 is 1/340.

Greatest Common Factor of 83,54,618

To find the highest common factor of 83,54,618, we have to find the factors of both numbers and list the highest common factor.

The factors of 83 are 1, 83

The factors of 54 are 1, 2, 3, 6, 9, 18, 27, 54

The factors of 618 are 1, 2, 3, 6, 103, 206, 309, 618

The HCF of 83,54,618 is 1.

Lets's calculate GCF of 83,54,618

Greatest Common Factor (GCF) of 83,54,618 By Common Division

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

Greatest Common Factor of 83,54,618 By Matching Biggest Common Factor Method

Now, list down the factors of 83

1,83

Now, list down the factors of 54

1,2,3,6,9,18,27,54

Now, list down the factors of 618

1,2,3,6,103,206,309,618

Greatest Common Factor

We found the factors 83,54,618 . The biggest common factor number is the GCF number.
So the greatest common factor 83,54,618 is 1.

Lets's calculate LCM of 85,68,20

Lowest Common Multiple of 85,68,20 using Common Division

2	85, 68, 20
2	85, 34, 10
5	85, 17, 5
17	17, 17, 1
	1, 1, 1

∴ So the LCM of the given numbers is 2 x 2 x 5 x 17 x 1 x 1 x 1 = 340

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/340

Therefore, the GCF of Fractions 83/85,54/68,618/20 is 1/340

Least Common Multiple of 85,68,20 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 85,68,20 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(85,68,20) = 1

common factors(in case of two or more numbers have common factors) = 340

GCF(85,68,20) x common factors =1 x 340 = 340

LCM(85,68,20) = ( 85 × 68 × 20 ) / 340

LCM(85,68,20) = 115600 / 340

LCM(85,68,20) = 340

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FAQs on GCF of Fractions of 83/85, 54/68, 618/20

1. What is the HCF of 83,54,618?

The HCF of 83,54,618 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 83/85, 54/68, 618/20?

Answer: GCF of Numerators as per given numbers 83/85, 54/68, 618/20 is

GCF of Numerators i.e. for 83,54,618 is 1

LCM of denominators i.e. for 85,68,20 is 340.

Thus, GCF of Fractions is 1/340.Finally, GCF of Fractions for 83/85, 54/68, 618/20 is 1/340.