Use our free GCF of Fractions Calculator tool to compute the GCF of 351/721, 420/505 i.e 3/364105 easily. The following is the detailed procedure to determine the greatest common factor of fractions 351/721, 420/505.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 351/721,420/505
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 351/721,420/505, numerators are 351,420
Denominators are 721,505
The GCF of 351,420 is 3 .
LCM of 721,505 is 364105.
The greatest common factor of 351/721,420/505 = [GCF of 351,420]/[LCM of 721,505]= 3/364105
Therefore, the GCF of 351/721,420/505 is 3/364105.
To find the highest common factor of 351,420, we have to find the factors of both numbers and list the highest common factor.
The factors of 351 are 1, 3, 9, 13, 27, 39, 117, 351
The factors of 420 are 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
The HCF of 351,420 is 3.
Lets's calculate GCF of 351,420
3 | 351, 420 |
117, 140 |
∴ So the GCF of the given numbers is 3 = 3
Now, list down the factors of 351
:1,3,9,13,27,39,117,351
Now, list down the factors of 420
:1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420
Greatest Common Factor
We found the factors 351,420 . The biggest common factor number is the GCF number.
So the greatest common factor 351,420 is 3.
Lets's calculate LCM of 721,505
Given numbers has no common factors except 1. So, there LCM is their product i.e 364105
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 3/364105
Therefore, the GCF of Fractions 351/721,420/505 is 3/364105
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 721,505 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(721,505) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(721,505) x common factors =1 x 1 = 1
LCM(721,505) = ( 721 × 505 ) / 1
LCM(721,505) = 364105 / 1
LCM(721,505) = 364105
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 351,420?
The HCF of 351,420 is 3
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 351/721, 420/505?
Answer: GCF of Numerators as per given numbers 351/721, 420/505 is
GCF of Numerators i.e. for 351,420 is 3
LCM of denominators i.e. for 721,505 is 364105.
Thus, GCF of Fractions is 3/364105.Finally, GCF of Fractions for 351/721, 420/505 is 3/364105.