Use our free GCF of Fractions Calculator tool to compute the GCF of 802/670, 640/645 i.e 2/86430 easily. The following is the detailed procedure to determine the greatest common factor of fractions 802/670, 640/645.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 802/670,640/645
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 802/670,640/645, numerators are 802,640
Denominators are 670,645
The GCF of 802,640 is 2 .
LCM of 670,645 is 86430.
The greatest common factor of 802/670,640/645 = [GCF of 802,640]/[LCM of 670,645]= 2/86430
Therefore, the GCF of 802/670,640/645 is 2/86430.
To find the highest common factor of 802,640, we have to find the factors of both numbers and list the highest common factor.
The factors of 802 are 1, 2, 401, 802
The factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
The HCF of 802,640 is 2.
Lets's calculate GCF of 802,640
2 | 802, 640 |
401, 320 |
∴ So the GCF of the given numbers is 2 = 2
Now, list down the factors of 802
:1,2,401,802
Now, list down the factors of 640
:1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640
Greatest Common Factor
We found the factors 802,640 . The biggest common factor number is the GCF number.
So the greatest common factor 802,640 is 2.
Lets's calculate LCM of 670,645
5 | 670, 645 |
134, 129 |
∴ So the LCM of the given numbers is 5 x 134 x 129 = 86430
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 2/86430
Therefore, the GCF of Fractions 802/670,640/645 is 2/86430
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 670,645 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(670,645) = 5
common factors(in case of two or more numbers have common factors) = 1
GCF(670,645) x common factors =5 x 1 = 5
LCM(670,645) = ( 670 × 645 ) / 5
LCM(670,645) = 432150 / 5
LCM(670,645) = 86430
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 802,640?
The HCF of 802,640 is 2
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 802/670, 640/645?
Answer: GCF of Numerators as per given numbers 802/670, 640/645 is
GCF of Numerators i.e. for 802,640 is 2
LCM of denominators i.e. for 670,645 is 86430.
Thus, GCF of Fractions is 2/86430.Finally, GCF of Fractions for 802/670, 640/645 is 2/86430.