GCF of 21/20, 987/22, 242/317
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 21/20, 987/22, 242/317 i.e 1/69740 easily. The following is the detailed procedure to determine the greatest common factor of fractions 21/20, 987/22, 242/317.
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 21/20,987/22,242/317?
Given fractions are 21/20,987/22,242/317
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 21/20,987/22,242/317, numerators are 21,987,242
Denominators are 20,22,317
The GCF of 21,987,242 is 1 .
LCM of 20,22,317 is 69740.
The greatest common factor of 21/20,987/22,242/317 = [GCF of 21,987,242]/[LCM of 20,22,317]= 1/69740
Therefore, the GCF of 21/20,987/22,242/317 is 1/69740.
To find the highest common factor of 21,987,242, we have to find the factors of both numbers and list the highest common factor.
The factors of 21 are 1, 3, 7, 21
The factors of 987 are 1, 3, 7, 21, 47, 141, 329, 987
The factors of 242 are 1, 2, 11, 22, 121, 242
The HCF of 21,987,242 is 1.
Lets's calculate GCF of 21,987,242
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 21,987,242 By Matching Biggest Common Factor Method
Now, list down the factors of 21
:1,3,7,21
Now, list down the factors of 987
:1,3,7,21,47,141,329,987
Now, list down the factors of 242
:1,2,11,22,121,242
Greatest Common Factor
We found the factors 21,987,242 . The biggest common factor number is the GCF number.
So the greatest common factor 21,987,242 is 1.
Lets's calculate LCM of 20,22,317
| 2 | 20, 22, 317 |
| 10, 11, 317 |
∴ So the LCM of the given numbers is 2 x 10 x 11 x 317 = 69740
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/69740
Therefore, the GCF of Fractions 21/20,987/22,242/317 is 1/69740
Least Common Multiple of 20,22,317 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 20,22,317 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(20,22,317) = 1
common factors(in case of two or more numbers have common factors) = 2
GCF(20,22,317) x common factors =1 x 2 = 2
LCM(20,22,317) = ( 20 × 22 × 317 ) / 2
LCM(20,22,317) = 139480 / 2
LCM(20,22,317) = 69740
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FAQs on GCF of Fractions of 21/20, 987/22, 242/317
1. What is the HCF of 21,987,242?
The HCF of 21,987,242 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 21/20, 987/22, 242/317?
Answer: GCF of Numerators as per given numbers 21/20, 987/22, 242/317 is
GCF of Numerators i.e. for 21,987,242 is 1
LCM of denominators i.e. for 20,22,317 is 69740.
Thus, GCF of Fractions is 1/69740.Finally, GCF of Fractions for 21/20, 987/22, 242/317 is 1/69740.