Use our free GCF of Fractions Calculator tool to compute the GCF of 685/988, 209/260 i.e 1/4940 easily. The following is the detailed procedure to determine the greatest common factor of fractions 685/988, 209/260.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 685/988,209/260
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 685/988,209/260, numerators are 685,209
Denominators are 988,260
The GCF of 685,209 is 1 .
LCM of 988,260 is 4940.
The greatest common factor of 685/988,209/260 = [GCF of 685,209]/[LCM of 988,260]= 1/4940
Therefore, the GCF of 685/988,209/260 is 1/4940.
To find the highest common factor of 685,209, we have to find the factors of both numbers and list the highest common factor.
The factors of 685 are 1, 5, 137, 685
The factors of 209 are 1, 11, 19, 209
The HCF of 685,209 is 1.
Lets's calculate GCF of 685,209
∴ So GCF of numbers is 1 because of no common factors present between them.
Now, list down the factors of 685
:1,5,137,685
Now, list down the factors of 209
:1,11,19,209
Greatest Common Factor
We found the factors 685,209 . The biggest common factor number is the GCF number.
So the greatest common factor 685,209 is 1.
Lets's calculate LCM of 988,260
2 | 988, 260 |
2 | 494, 130 |
13 | 247, 65 |
19, 5 |
∴ So the LCM of the given numbers is 2 x 2 x 13 x 19 x 5 = 4940
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/4940
Therefore, the GCF of Fractions 685/988,209/260 is 1/4940
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 988,260 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(988,260) = 52
common factors(in case of two or more numbers have common factors) = 1
GCF(988,260) x common factors =52 x 1 = 52
LCM(988,260) = ( 988 × 260 ) / 52
LCM(988,260) = 256880 / 52
LCM(988,260) = 4940
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 685,209?
The HCF of 685,209 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 685/988, 209/260?
Answer: GCF of Numerators as per given numbers 685/988, 209/260 is
GCF of Numerators i.e. for 685,209 is 1
LCM of denominators i.e. for 988,260 is 4940.
Thus, GCF of Fractions is 1/4940.Finally, GCF of Fractions for 685/988, 209/260 is 1/4940.