GCF of 819/81, 663/807
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 819/81, 663/807 i.e 39/21789 easily. The following is the detailed procedure to determine the greatest common factor of fractions 819/81, 663/807.
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 819/81,663/807?
Given fractions are 819/81,663/807
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 819/81,663/807, numerators are 819,663
Denominators are 81,807
The GCF of 819,663 is 39 .
LCM of 81,807 is 21789.
The greatest common factor of 819/81,663/807 = [GCF of 819,663]/[LCM of 81,807]= 39/21789
Therefore, the GCF of 819/81,663/807 is 39/21789.
To find the highest common factor of 819,663, we have to find the factors of both numbers and list the highest common factor.
The factors of 819 are 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819
The factors of 663 are 1, 3, 13, 17, 39, 51, 221, 663
The HCF of 819,663 is 39.
Lets's calculate GCF of 819,663
| 3 | 819, 663 |
| 13 | 273, 221 |
| 21, 17 |
∴ So the GCF of the given numbers is 3 x 13 = 39
Greatest Common Factor of 819,663 By Matching Biggest Common Factor Method
Now, list down the factors of 819
:1,3,7,9,13,21,39,63,91,117,273,819
Now, list down the factors of 663
:1,3,13,17,39,51,221,663
Greatest Common Factor
We found the factors 819,663 . The biggest common factor number is the GCF number.
So the greatest common factor 819,663 is 39.
Lets's calculate LCM of 81,807
| 3 | 81, 807 |
| 27, 269 |
∴ So the LCM of the given numbers is 3 x 27 x 269 = 21789
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 39/21789
Therefore, the GCF of Fractions 819/81,663/807 is 39/21789
Least Common Multiple of 81,807 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 81,807 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(81,807) = 3
common factors(in case of two or more numbers have common factors) = 1
GCF(81,807) x common factors =3 x 1 = 3
LCM(81,807) = ( 81 × 807 ) / 3
LCM(81,807) = 65367 / 3
LCM(81,807) = 21789
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FAQs on GCF of Fractions of 819/81, 663/807
1. What is the HCF of 819,663?
The HCF of 819,663 is 39
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 819/81, 663/807?
Answer: GCF of Numerators as per given numbers 819/81, 663/807 is
GCF of Numerators i.e. for 819,663 is 39
LCM of denominators i.e. for 81,807 is 21789.
Thus, GCF of Fractions is 39/21789.Finally, GCF of Fractions for 819/81, 663/807 is 39/21789.