GCF of 86/81, 13/21, 89/438
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 86/81, 13/21, 89/438 i.e 1/82782 easily. The following is the detailed procedure to determine the greatest common factor of fractions 86/81, 13/21, 89/438.
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 86/81,13/21,89/438?
Given fractions are 86/81,13/21,89/438
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 86/81,13/21,89/438, numerators are 86,13,89
Denominators are 81,21,438
The GCF of 86,13,89 is 1 .
LCM of 81,21,438 is 82782.
The greatest common factor of 86/81,13/21,89/438 = [GCF of 86,13,89]/[LCM of 81,21,438]= 1/82782
Therefore, the GCF of 86/81,13/21,89/438 is 1/82782.
To find the highest common factor of 86,13,89, we have to find the factors of both numbers and list the highest common factor.
The factors of 86 are 1, 2, 43, 86
The factors of 13 are 1, 13
The factors of 89 are 1, 89
The HCF of 86,13,89 is 1.
Lets's calculate GCF of 86,13,89
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 86,13,89 By Matching Biggest Common Factor Method
Now, list down the factors of 86
:1,2,43,86
Now, list down the factors of 13
:1,13
Now, list down the factors of 89
:1,89
Greatest Common Factor
We found the factors 86,13,89 . The biggest common factor number is the GCF number.
So the greatest common factor 86,13,89 is 1.
Lets's calculate LCM of 81,21,438
| 3 | 81, 21, 438 |
| 27, 7, 146 |
∴ So the LCM of the given numbers is 3 x 27 x 7 x 146 = 82782
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/82782
Therefore, the GCF of Fractions 86/81,13/21,89/438 is 1/82782
Least Common Multiple of 81,21,438 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 81,21,438 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(81,21,438) = 3
common factors(in case of two or more numbers have common factors) = 3
GCF(81,21,438) x common factors =3 x 3 = 9
LCM(81,21,438) = ( 81 × 21 × 438 ) / 9
LCM(81,21,438) = 745038 / 9
LCM(81,21,438) = 82782
GCF of Fractions Calculation Examples
Here are some samples of GCF of Fractions calculations.
FAQs on GCF of Fractions of 86/81, 13/21, 89/438
1. What is the HCF of 86,13,89?
The HCF of 86,13,89 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 86/81, 13/21, 89/438?
Answer: GCF of Numerators as per given numbers 86/81, 13/21, 89/438 is
GCF of Numerators i.e. for 86,13,89 is 1
LCM of denominators i.e. for 81,21,438 is 82782.
Thus, GCF of Fractions is 1/82782.Finally, GCF of Fractions for 86/81, 13/21, 89/438 is 1/82782.