Use our free GCF of Fractions Calculator tool to compute the GCF of 840/995, 255/769 i.e 15/765155 easily. The following is the detailed procedure to determine the greatest common factor of fractions 840/995, 255/769.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 840/995,255/769
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 840/995,255/769, numerators are 840,255
Denominators are 995,769
The GCF of 840,255 is 15 .
LCM of 995,769 is 765155.
The greatest common factor of 840/995,255/769 = [GCF of 840,255]/[LCM of 995,769]= 15/765155
Therefore, the GCF of 840/995,255/769 is 15/765155.
To find the highest common factor of 840,255, we have to find the factors of both numbers and list the highest common factor.
The factors of 840 are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
The factors of 255 are 1, 3, 5, 15, 17, 51, 85, 255
The HCF of 840,255 is 15.
Lets's calculate GCF of 840,255
3 | 840, 255 |
5 | 280, 85 |
56, 17 |
∴ So the GCF of the given numbers is 3 x 5 = 15
Now, list down the factors of 840
:1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840
Now, list down the factors of 255
:1,3,5,15,17,51,85,255
Greatest Common Factor
We found the factors 840,255 . The biggest common factor number is the GCF number.
So the greatest common factor 840,255 is 15.
Lets's calculate LCM of 995,769
Given numbers has no common factors except 1. So, there LCM is their product i.e 765155
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 15/765155
Therefore, the GCF of Fractions 840/995,255/769 is 15/765155
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 995,769 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(995,769) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(995,769) x common factors =1 x 1 = 1
LCM(995,769) = ( 995 × 769 ) / 1
LCM(995,769) = 765155 / 1
LCM(995,769) = 765155
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 840,255?
The HCF of 840,255 is 15
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 840/995, 255/769?
Answer: GCF of Numerators as per given numbers 840/995, 255/769 is
GCF of Numerators i.e. for 840,255 is 15
LCM of denominators i.e. for 995,769 is 765155.
Thus, GCF of Fractions is 15/765155.Finally, GCF of Fractions for 840/995, 255/769 is 15/765155.