GCF of 57/63, 78/21, 44/84, 70/729
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 57/63, 78/21, 44/84, 70/729 i.e 1/20412 easily. The following is the detailed procedure to determine the greatest common factor of fractions 57/63, 78/21, 44/84, 70/729.
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 57/63,78/21,44/84,70/729?
Given fractions are 57/63,78/21,44/84,70/729
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 57/63,78/21,44/84,70/729, numerators are 57,78,44,70
Denominators are 63,21,84,729
The GCF of 57,78,44,70 is 1 .
LCM of 63,21,84,729 is 20412.
The greatest common factor of 57/63,78/21,44/84,70/729 = [GCF of 57,78,44,70]/[LCM of 63,21,84,729]= 1/20412
Therefore, the GCF of 57/63,78/21,44/84,70/729 is 1/20412.
To find the highest common factor of 57,78,44,70, we have to find the factors of both numbers and list the highest common factor.
The factors of 57 are 1, 3, 19, 57
The factors of 78 are 1, 2, 3, 6, 13, 26, 39, 78
The factors of 44 are 1, 2, 4, 11, 22, 44
The factors of 70 are 1, 2, 5, 7, 10, 14, 35, 70
The HCF of 57,78,44,70 is 1.
Lets's calculate GCF of 57,78,44,70
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 57,78,44,70 By Matching Biggest Common Factor Method
Now, list down the factors of 57
:1,3,19,57
Now, list down the factors of 78
:1,2,3,6,13,26,39,78
Now, list down the factors of 44
:1,2,4,11,22,44
Now, list down the factors of 70
:1,2,5,7,10,14,35,70
Greatest Common Factor
We found the factors 57,78,44,70 . The biggest common factor number is the GCF number.
So the greatest common factor 57,78,44,70 is 1.
Lets's calculate LCM of 63,21,84,729
| 3 | 63, 21, 84, 729 |
| 3 | 21, 7, 28, 243 |
| 7 | 7, 7, 28, 81 |
| 1, 1, 4, 81 |
∴ So the LCM of the given numbers is 3 x 3 x 7 x 1 x 1 x 4 x 81 = 20412
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/20412
Therefore, the GCF of Fractions 57/63,78/21,44/84,70/729 is 1/20412
Least Common Multiple of 63,21,84,729 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 63,21,84,729 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(63,21,84,729) = 3
common factors(in case of two or more numbers have common factors) = 1323
GCF(63,21,84,729) x common factors =3 x 1323 = 3969
LCM(63,21,84,729) = ( 63 × 21 × 84 × 729 ) / 3969
LCM(63,21,84,729) = 81015228 / 3969
LCM(63,21,84,729) = 20412
GCF of Fractions Calculation Examples
Here are some samples of GCF of Fractions calculations.
FAQs on GCF of Fractions of 57/63, 78/21, 44/84, 70/729
1. What is the HCF of 57,78,44,70?
The HCF of 57,78,44,70 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 57/63, 78/21, 44/84, 70/729?
Answer: GCF of Numerators as per given numbers 57/63, 78/21, 44/84, 70/729 is
GCF of Numerators i.e. for 57,78,44,70 is 1
LCM of denominators i.e. for 63,21,84,729 is 20412.
Thus, GCF of Fractions is 1/20412.Finally, GCF of Fractions for 57/63, 78/21, 44/84, 70/729 is 1/20412.