Use our free GCF of Fractions Calculator tool to compute the GCF of 399/659, 947/642 i.e 1/423078 easily. The following is the detailed procedure to determine the greatest common factor of fractions 399/659, 947/642.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 399/659,947/642
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 399/659,947/642, numerators are 399,947
Denominators are 659,642
The GCF of 399,947 is 1 .
LCM of 659,642 is 423078.
The greatest common factor of 399/659,947/642 = [GCF of 399,947]/[LCM of 659,642]= 1/423078
Therefore, the GCF of 399/659,947/642 is 1/423078.
To find the highest common factor of 399,947, we have to find the factors of both numbers and list the highest common factor.
The factors of 399 are 1, 3, 7, 19, 21, 57, 133, 399
The factors of 947 are 1, 947
The HCF of 399,947 is 1.
Lets's calculate GCF of 399,947
∴ So GCF of numbers is 1 because of no common factors present between them.
Now, list down the factors of 399
:1,3,7,19,21,57,133,399
Now, list down the factors of 947
:1,947
Greatest Common Factor
We found the factors 399,947 . The biggest common factor number is the GCF number.
So the greatest common factor 399,947 is 1.
Lets's calculate LCM of 659,642
Given numbers has no common factors except 1. So, there LCM is their product i.e 423078
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/423078
Therefore, the GCF of Fractions 399/659,947/642 is 1/423078
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 659,642 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(659,642) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(659,642) x common factors =1 x 1 = 1
LCM(659,642) = ( 659 × 642 ) / 1
LCM(659,642) = 423078 / 1
LCM(659,642) = 423078
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 399,947?
The HCF of 399,947 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 399/659, 947/642?
Answer: GCF of Numerators as per given numbers 399/659, 947/642 is
GCF of Numerators i.e. for 399,947 is 1
LCM of denominators i.e. for 659,642 is 423078.
Thus, GCF of Fractions is 1/423078.Finally, GCF of Fractions for 399/659, 947/642 is 1/423078.