Use our free GCF of Fractions Calculator tool to compute the GCF of 390/521, 507/519 i.e 39/270399 easily. The following is the detailed procedure to determine the greatest common factor of fractions 390/521, 507/519.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 390/521,507/519
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 390/521,507/519, numerators are 390,507
Denominators are 521,519
The GCF of 390,507 is 39 .
LCM of 521,519 is 270399.
The greatest common factor of 390/521,507/519 = [GCF of 390,507]/[LCM of 521,519]= 39/270399
Therefore, the GCF of 390/521,507/519 is 39/270399.
To find the highest common factor of 390,507, we have to find the factors of both numbers and list the highest common factor.
The factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
The factors of 507 are 1, 3, 13, 39, 169, 507
The HCF of 390,507 is 39.
Lets's calculate GCF of 390,507
3 | 390, 507 |
13 | 130, 169 |
10, 13 |
∴ So the GCF of the given numbers is 3 x 13 = 39
Now, list down the factors of 390
:1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390
Now, list down the factors of 507
:1,3,13,39,169,507
Greatest Common Factor
We found the factors 390,507 . The biggest common factor number is the GCF number.
So the greatest common factor 390,507 is 39.
Lets's calculate LCM of 521,519
Given numbers has no common factors except 1. So, there LCM is their product i.e 270399
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 39/270399
Therefore, the GCF of Fractions 390/521,507/519 is 39/270399
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 521,519 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(521,519) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(521,519) x common factors =1 x 1 = 1
LCM(521,519) = ( 521 × 519 ) / 1
LCM(521,519) = 270399 / 1
LCM(521,519) = 270399
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 390,507?
The HCF of 390,507 is 39
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 390/521, 507/519?
Answer: GCF of Numerators as per given numbers 390/521, 507/519 is
GCF of Numerators i.e. for 390,507 is 39
LCM of denominators i.e. for 521,519 is 270399.
Thus, GCF of Fractions is 39/270399.Finally, GCF of Fractions for 390/521, 507/519 is 39/270399.