GCF of 686/21, 815/885
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 686/21, 815/885 i.e 1/6195 easily. The following is the detailed procedure to determine the greatest common factor of fractions 686/21, 815/885.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
What is the GCF of 686/21,815/885?
Given fractions are 686/21,815/885
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 686/21,815/885, numerators are 686,815
Denominators are 21,885
The GCF of 686,815 is 1 .
LCM of 21,885 is 6195.
The greatest common factor of 686/21,815/885 = [GCF of 686,815]/[LCM of 21,885]= 1/6195
Therefore, the GCF of 686/21,815/885 is 1/6195.
To find the highest common factor of 686,815, we have to find the factors of both numbers and list the highest common factor.
The factors of 686 are 1, 2, 7, 14, 49, 98, 343, 686
The factors of 815 are 1, 5, 163, 815
The HCF of 686,815 is 1.
Lets's calculate GCF of 686,815
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 686,815 By Matching Biggest Common Factor Method
Now, list down the factors of 686
:1,2,7,14,49,98,343,686
Now, list down the factors of 815
:1,5,163,815
Greatest Common Factor
We found the factors 686,815 . The biggest common factor number is the GCF number.
So the greatest common factor 686,815 is 1.
Lets's calculate LCM of 21,885
| 3 | 21, 885 |
| 7, 295 |
∴ So the LCM of the given numbers is 3 x 7 x 295 = 6195
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/6195
Therefore, the GCF of Fractions 686/21,815/885 is 1/6195
Least Common Multiple of 21,885 with GCF Formula
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 21,885 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(21,885) = 3
common factors(in case of two or more numbers have common factors) = 1
GCF(21,885) x common factors =3 x 1 = 3
LCM(21,885) = ( 21 × 885 ) / 3
LCM(21,885) = 18585 / 3
LCM(21,885) = 6195
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FAQs on GCF of Fractions of 686/21, 815/885
1. What is the HCF of 686,815?
The HCF of 686,815 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 686/21, 815/885?
Answer: GCF of Numerators as per given numbers 686/21, 815/885 is
GCF of Numerators i.e. for 686,815 is 1
LCM of denominators i.e. for 21,885 is 6195.
Thus, GCF of Fractions is 1/6195.Finally, GCF of Fractions for 686/21, 815/885 is 1/6195.