GCF of 57/77, 209/84, 642/862
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 57/77, 209/84, 642/862 i.e 1/398244 easily. The following is the detailed procedure to determine the greatest common factor of fractions 57/77, 209/84, 642/862.
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 57/77,209/84,642/862?
Given fractions are 57/77,209/84,642/862
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 57/77,209/84,642/862, numerators are 57,209,642
Denominators are 77,84,862
The GCF of 57,209,642 is 1 .
LCM of 77,84,862 is 398244.
The greatest common factor of 57/77,209/84,642/862 = [GCF of 57,209,642]/[LCM of 77,84,862]= 1/398244
Therefore, the GCF of 57/77,209/84,642/862 is 1/398244.
To find the highest common factor of 57,209,642, 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 209 are 1, 11, 19, 209
The factors of 642 are 1, 2, 3, 6, 107, 214, 321, 642
The HCF of 57,209,642 is 1.
Lets's calculate GCF of 57,209,642
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 57,209,642 By Matching Biggest Common Factor Method
Now, list down the factors of 57
:1,3,19,57
Now, list down the factors of 209
:1,11,19,209
Now, list down the factors of 642
:1,2,3,6,107,214,321,642
Greatest Common Factor
We found the factors 57,209,642 . The biggest common factor number is the GCF number.
So the greatest common factor 57,209,642 is 1.
Lets's calculate LCM of 77,84,862
| 2 | 77, 84, 862 |
| 7 | 77, 42, 431 |
| 11, 6, 431 |
∴ So the LCM of the given numbers is 2 x 7 x 11 x 6 x 431 = 398244
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/398244
Therefore, the GCF of Fractions 57/77,209/84,642/862 is 1/398244
Least Common Multiple of 77,84,862 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 77,84,862 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(77,84,862) = 1
common factors(in case of two or more numbers have common factors) = 14
GCF(77,84,862) x common factors =1 x 14 = 14
LCM(77,84,862) = ( 77 × 84 × 862 ) / 14
LCM(77,84,862) = 5575416 / 14
LCM(77,84,862) = 398244
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FAQs on GCF of Fractions of 57/77, 209/84, 642/862
1. What is the HCF of 57,209,642?
The HCF of 57,209,642 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 57/77, 209/84, 642/862?
Answer: GCF of Numerators as per given numbers 57/77, 209/84, 642/862 is
GCF of Numerators i.e. for 57,209,642 is 1
LCM of denominators i.e. for 77,84,862 is 398244.
Thus, GCF of Fractions is 1/398244.Finally, GCF of Fractions for 57/77, 209/84, 642/862 is 1/398244.