Use our free GCF of Fractions Calculator tool to compute the GCF of 657/811, 398/990 i.e 1/802890 easily. The following is the detailed procedure to determine the greatest common factor of fractions 657/811, 398/990.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 657/811,398/990
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 657/811,398/990, numerators are 657,398
Denominators are 811,990
The GCF of 657,398 is 1 .
LCM of 811,990 is 802890.
The greatest common factor of 657/811,398/990 = [GCF of 657,398]/[LCM of 811,990]= 1/802890
Therefore, the GCF of 657/811,398/990 is 1/802890.
To find the highest common factor of 657,398, we have to find the factors of both numbers and list the highest common factor.
The factors of 657 are 1, 3, 9, 73, 219, 657
The factors of 398 are 1, 2, 199, 398
The HCF of 657,398 is 1.
Lets's calculate GCF of 657,398
∴ So GCF of numbers is 1 because of no common factors present between them.
Now, list down the factors of 657
:1,3,9,73,219,657
Now, list down the factors of 398
:1,2,199,398
Greatest Common Factor
We found the factors 657,398 . The biggest common factor number is the GCF number.
So the greatest common factor 657,398 is 1.
Lets's calculate LCM of 811,990
Given numbers has no common factors except 1. So, there LCM is their product i.e 802890
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/802890
Therefore, the GCF of Fractions 657/811,398/990 is 1/802890
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 811,990 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(811,990) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(811,990) x common factors =1 x 1 = 1
LCM(811,990) = ( 811 × 990 ) / 1
LCM(811,990) = 802890 / 1
LCM(811,990) = 802890
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 657,398?
The HCF of 657,398 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 657/811, 398/990?
Answer: GCF of Numerators as per given numbers 657/811, 398/990 is
GCF of Numerators i.e. for 657,398 is 1
LCM of denominators i.e. for 811,990 is 802890.
Thus, GCF of Fractions is 1/802890.Finally, GCF of Fractions for 657/811, 398/990 is 1/802890.