GCF of 20/15, 18/20, 82/65, 63/978
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 20/15, 18/20, 82/65, 63/978 i.e 1/127140 easily. The following is the detailed procedure to determine the greatest common factor of fractions 20/15, 18/20, 82/65, 63/978.
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 20/15,18/20,82/65,63/978?
Given fractions are 20/15,18/20,82/65,63/978
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 20/15,18/20,82/65,63/978, numerators are 20,18,82,63
Denominators are 15,20,65,978
The GCF of 20,18,82,63 is 1 .
LCM of 15,20,65,978 is 127140.
The greatest common factor of 20/15,18/20,82/65,63/978 = [GCF of 20,18,82,63]/[LCM of 15,20,65,978]= 1/127140
Therefore, the GCF of 20/15,18/20,82/65,63/978 is 1/127140.
To find the highest common factor of 20,18,82,63, we have to find the factors of both numbers and list the highest common factor.
The factors of 20 are 1, 2, 4, 5, 10, 20
The factors of 18 are 1, 2, 3, 6, 9, 18
The factors of 82 are 1, 2, 41, 82
The factors of 63 are 1, 3, 7, 9, 21, 63
The HCF of 20,18,82,63 is 1.
Lets's calculate GCF of 20,18,82,63
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 20,18,82,63 By Matching Biggest Common Factor Method
Now, list down the factors of 20
:1,2,4,5,10,20
Now, list down the factors of 18
:1,2,3,6,9,18
Now, list down the factors of 82
:1,2,41,82
Now, list down the factors of 63
:1,3,7,9,21,63
Greatest Common Factor
We found the factors 20,18,82,63 . The biggest common factor number is the GCF number.
So the greatest common factor 20,18,82,63 is 1.
Lets's calculate LCM of 15,20,65,978
| 2 | 15, 20, 65, 978 |
| 3 | 15, 10, 65, 489 |
| 5 | 5, 10, 65, 163 |
| 1, 2, 13, 163 |
∴ So the LCM of the given numbers is 2 x 3 x 5 x 1 x 2 x 13 x 163 = 127140
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/127140
Therefore, the GCF of Fractions 20/15,18/20,82/65,63/978 is 1/127140
Least Common Multiple of 15,20,65,978 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 15,20,65,978 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(15,20,65,978) = 1
common factors(in case of two or more numbers have common factors) = 150
GCF(15,20,65,978) x common factors =1 x 150 = 150
LCM(15,20,65,978) = ( 15 × 20 × 65 × 978 ) / 150
LCM(15,20,65,978) = 19071000 / 150
LCM(15,20,65,978) = 127140
GCF of Fractions Calculation Examples
Here are some samples of GCF of Fractions calculations.
FAQs on GCF of Fractions of 20/15, 18/20, 82/65, 63/978
1. What is the HCF of 20,18,82,63?
The HCF of 20,18,82,63 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 20/15, 18/20, 82/65, 63/978?
Answer: GCF of Numerators as per given numbers 20/15, 18/20, 82/65, 63/978 is
GCF of Numerators i.e. for 20,18,82,63 is 1
LCM of denominators i.e. for 15,20,65,978 is 127140.
Thus, GCF of Fractions is 1/127140.Finally, GCF of Fractions for 20/15, 18/20, 82/65, 63/978 is 1/127140.