GCF of 68/91, 29/80, 690/428
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 68/91, 29/80, 690/428 i.e 1/778960 easily. The following is the detailed procedure to determine the greatest common factor of fractions 68/91, 29/80, 690/428.
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 68/91,29/80,690/428?
Given fractions are 68/91,29/80,690/428
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 68/91,29/80,690/428, numerators are 68,29,690
Denominators are 91,80,428
The GCF of 68,29,690 is 1 .
LCM of 91,80,428 is 778960.
The greatest common factor of 68/91,29/80,690/428 = [GCF of 68,29,690]/[LCM of 91,80,428]= 1/778960
Therefore, the GCF of 68/91,29/80,690/428 is 1/778960.
To find the highest common factor of 68,29,690, we have to find the factors of both numbers and list the highest common factor.
The factors of 68 are 1, 2, 4, 17, 34, 68
The factors of 29 are 1, 29
The factors of 690 are 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
The HCF of 68,29,690 is 1.
Lets's calculate GCF of 68,29,690
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 68,29,690 By Matching Biggest Common Factor Method
Now, list down the factors of 68
:1,2,4,17,34,68
Now, list down the factors of 29
:1,29
Now, list down the factors of 690
:1,2,3,5,6,10,15,23,30,46,69,115,138,230,345,690
Greatest Common Factor
We found the factors 68,29,690 . The biggest common factor number is the GCF number.
So the greatest common factor 68,29,690 is 1.
Lets's calculate LCM of 91,80,428
| 2 | 91, 80, 428 |
| 2 | 91, 40, 214 |
| 91, 20, 107 |
∴ So the LCM of the given numbers is 2 x 2 x 91 x 20 x 107 = 778960
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/778960
Therefore, the GCF of Fractions 68/91,29/80,690/428 is 1/778960
Least Common Multiple of 91,80,428 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 91,80,428 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(91,80,428) = 1
common factors(in case of two or more numbers have common factors) = 4
GCF(91,80,428) x common factors =1 x 4 = 4
LCM(91,80,428) = ( 91 × 80 × 428 ) / 4
LCM(91,80,428) = 3115840 / 4
LCM(91,80,428) = 778960
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FAQs on GCF of Fractions of 68/91, 29/80, 690/428
1. What is the HCF of 68,29,690?
The HCF of 68,29,690 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 68/91, 29/80, 690/428?
Answer: GCF of Numerators as per given numbers 68/91, 29/80, 690/428 is
GCF of Numerators i.e. for 68,29,690 is 1
LCM of denominators i.e. for 91,80,428 is 778960.
Thus, GCF of Fractions is 1/778960.Finally, GCF of Fractions for 68/91, 29/80, 690/428 is 1/778960.