Use our free GCF of Fractions Calculator tool to compute the GCF of 680/618, 870/420 i.e 10/43260 easily. The following is the detailed procedure to determine the greatest common factor of fractions 680/618, 870/420.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 680/618,870/420
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 680/618,870/420, numerators are 680,870
Denominators are 618,420
The GCF of 680,870 is 10 .
LCM of 618,420 is 43260.
The greatest common factor of 680/618,870/420 = [GCF of 680,870]/[LCM of 618,420]= 10/43260
Therefore, the GCF of 680/618,870/420 is 10/43260.
To find the highest common factor of 680,870, we have to find the factors of both numbers and list the highest common factor.
The factors of 680 are 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
The factors of 870 are 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870
The HCF of 680,870 is 10.
Lets's calculate GCF of 680,870
2 | 680, 870 |
5 | 340, 435 |
68, 87 |
∴ So the GCF of the given numbers is 2 x 5 = 10
Now, list down the factors of 680
:1,2,4,5,8,10,17,20,34,40,68,85,136,170,340,680
Now, list down the factors of 870
:1,2,3,5,6,10,15,29,30,58,87,145,174,290,435,870
Greatest Common Factor
We found the factors 680,870 . The biggest common factor number is the GCF number.
So the greatest common factor 680,870 is 10.
Lets's calculate LCM of 618,420
2 | 618, 420 |
3 | 309, 210 |
103, 70 |
∴ So the LCM of the given numbers is 2 x 3 x 103 x 70 = 43260
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 10/43260
Therefore, the GCF of Fractions 680/618,870/420 is 10/43260
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 618,420 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(618,420) = 6
common factors(in case of two or more numbers have common factors) = 1
GCF(618,420) x common factors =6 x 1 = 6
LCM(618,420) = ( 618 × 420 ) / 6
LCM(618,420) = 259560 / 6
LCM(618,420) = 43260
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 680,870?
The HCF of 680,870 is 10
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 680/618, 870/420?
Answer: GCF of Numerators as per given numbers 680/618, 870/420 is
GCF of Numerators i.e. for 680,870 is 10
LCM of denominators i.e. for 618,420 is 43260.
Thus, GCF of Fractions is 10/43260.Finally, GCF of Fractions for 680/618, 870/420 is 10/43260.