Use our free GCF of Fractions Calculator tool to compute the GCF of 285/809, 721/210 i.e 1/169890 easily. The following is the detailed procedure to determine the greatest common factor of fractions 285/809, 721/210.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 285/809,721/210
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 285/809,721/210, numerators are 285,721
Denominators are 809,210
The GCF of 285,721 is 1 .
LCM of 809,210 is 169890.
The greatest common factor of 285/809,721/210 = [GCF of 285,721]/[LCM of 809,210]= 1/169890
Therefore, the GCF of 285/809,721/210 is 1/169890.
To find the highest common factor of 285,721, we have to find the factors of both numbers and list the highest common factor.
The factors of 285 are 1, 3, 5, 15, 19, 57, 95, 285
The factors of 721 are 1, 7, 103, 721
The HCF of 285,721 is 1.
Lets's calculate GCF of 285,721
∴ So GCF of numbers is 1 because of no common factors present between them.
Now, list down the factors of 285
:1,3,5,15,19,57,95,285
Now, list down the factors of 721
:1,7,103,721
Greatest Common Factor
We found the factors 285,721 . The biggest common factor number is the GCF number.
So the greatest common factor 285,721 is 1.
Lets's calculate LCM of 809,210
Given numbers has no common factors except 1. So, there LCM is their product i.e 169890
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/169890
Therefore, the GCF of Fractions 285/809,721/210 is 1/169890
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 809,210 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(809,210) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(809,210) x common factors =1 x 1 = 1
LCM(809,210) = ( 809 × 210 ) / 1
LCM(809,210) = 169890 / 1
LCM(809,210) = 169890
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 285,721?
The HCF of 285,721 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 285/809, 721/210?
Answer: GCF of Numerators as per given numbers 285/809, 721/210 is
GCF of Numerators i.e. for 285,721 is 1
LCM of denominators i.e. for 809,210 is 169890.
Thus, GCF of Fractions is 1/169890.Finally, GCF of Fractions for 285/809, 721/210 is 1/169890.