Use our free GCF of Fractions Calculator tool to compute the GCF of 720/420, 451/205 i.e 1/17220 easily. The following is the detailed procedure to determine the greatest common factor of fractions 720/420, 451/205.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 720/420,451/205
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 720/420,451/205, numerators are 720,451
Denominators are 420,205
The GCF of 720,451 is 1 .
LCM of 420,205 is 17220.
The greatest common factor of 720/420,451/205 = [GCF of 720,451]/[LCM of 420,205]= 1/17220
Therefore, the GCF of 720/420,451/205 is 1/17220.
To find the highest common factor of 720,451, we have to find the factors of both numbers and list the highest common factor.
The factors of 720 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
The factors of 451 are 1, 11, 41, 451
The HCF of 720,451 is 1.
Lets's calculate GCF of 720,451
∴ So GCF of numbers is 1 because of no common factors present between them.
Now, list down the factors of 720
:1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,30,36,40,45,48,60,72,80,90,120,144,180,240,360,720
Now, list down the factors of 451
:1,11,41,451
Greatest Common Factor
We found the factors 720,451 . The biggest common factor number is the GCF number.
So the greatest common factor 720,451 is 1.
Lets's calculate LCM of 420,205
5 | 420, 205 |
84, 41 |
∴ So the LCM of the given numbers is 5 x 84 x 41 = 17220
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/17220
Therefore, the GCF of Fractions 720/420,451/205 is 1/17220
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 420,205 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(420,205) = 5
common factors(in case of two or more numbers have common factors) = 1
GCF(420,205) x common factors =5 x 1 = 5
LCM(420,205) = ( 420 × 205 ) / 5
LCM(420,205) = 86100 / 5
LCM(420,205) = 17220
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 720,451?
The HCF of 720,451 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 720/420, 451/205?
Answer: GCF of Numerators as per given numbers 720/420, 451/205 is
GCF of Numerators i.e. for 720,451 is 1
LCM of denominators i.e. for 420,205 is 17220.
Thus, GCF of Fractions is 1/17220.Finally, GCF of Fractions for 720/420, 451/205 is 1/17220.