Use our free GCF of Fractions Calculator tool to compute the GCF of 639/668, 7821/4316 i.e 9/720772 easily. The following is the detailed procedure to determine the greatest common factor of fractions 639/668, 7821/4316.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 639/668,7821/4316
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 639/668,7821/4316, numerators are 639,7821
Denominators are 668,4316
The GCF of 639,7821 is 9 .
LCM of 668,4316 is 720772.
The greatest common factor of 639/668,7821/4316 = [GCF of 639,7821]/[LCM of 668,4316]= 9/720772
Therefore, the GCF of 639/668,7821/4316 is 9/720772.
To find the highest common factor of 639,7821, we have to find the factors of both numbers and list the highest common factor.
The factors of 639 are 1, 3, 9, 71, 213, 639
The factors of 7821 are 1, 3, 9, 11, 33, 79, 99, 237, 711, 869, 2607, 7821
The HCF of 639,7821 is 9.
Lets's calculate GCF of 639,7821
3 | 639, 7821 |
3 | 213, 2607 |
71, 869 |
∴ So the GCF of the given numbers is 3 x 3 = 9
Now, list down the factors of 639
:1,3,9,71,213,639
Now, list down the factors of 7821
:1,3,9,11,33,79,99,237,711,869,2607,7821
Greatest Common Factor
We found the factors 639,7821 . The biggest common factor number is the GCF number.
So the greatest common factor 639,7821 is 9.
Lets's calculate LCM of 668,4316
2 | 668, 4316 |
2 | 334, 2158 |
167, 1079 |
∴ So the LCM of the given numbers is 2 x 2 x 167 x 1079 = 720772
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 9/720772
Therefore, the GCF of Fractions 639/668,7821/4316 is 9/720772
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 668,4316 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(668,4316) = 4
common factors(in case of two or more numbers have common factors) = 1
GCF(668,4316) x common factors =4 x 1 = 4
LCM(668,4316) = ( 668 × 4316 ) / 4
LCM(668,4316) = 2883088 / 4
LCM(668,4316) = 720772
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 639,7821?
The HCF of 639,7821 is 9
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 639/668, 7821/4316?
Answer: GCF of Numerators as per given numbers 639/668, 7821/4316 is
GCF of Numerators i.e. for 639,7821 is 9
LCM of denominators i.e. for 668,4316 is 720772.
Thus, GCF of Fractions is 9/720772.Finally, GCF of Fractions for 639/668, 7821/4316 is 9/720772.