GCF of 393/42, 689/108
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 393/42, 689/108 i.e 1/756 easily. The following is the detailed procedure to determine the greatest common factor of fractions 393/42, 689/108.
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 393/42,689/108?
Given fractions are 393/42,689/108
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 393/42,689/108, numerators are 393,689
Denominators are 42,108
The GCF of 393,689 is 1 .
LCM of 42,108 is 756.
The greatest common factor of 393/42,689/108 = [GCF of 393,689]/[LCM of 42,108]= 1/756
Therefore, the GCF of 393/42,689/108 is 1/756.
To find the highest common factor of 393,689, we have to find the factors of both numbers and list the highest common factor.
The factors of 393 are 1, 3, 131, 393
The factors of 689 are 1, 13, 53, 689
The HCF of 393,689 is 1.
Lets's calculate GCF of 393,689
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 393,689 By Matching Biggest Common Factor Method
Now, list down the factors of 393
:1,3,131,393
Now, list down the factors of 689
:1,13,53,689
Greatest Common Factor
We found the factors 393,689 . The biggest common factor number is the GCF number.
So the greatest common factor 393,689 is 1.
Lets's calculate LCM of 42,108
| 2 | 42, 108 |
| 3 | 21, 54 |
| 7, 18 |
∴ So the LCM of the given numbers is 2 x 3 x 7 x 18 = 756
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/756
Therefore, the GCF of Fractions 393/42,689/108 is 1/756
Least Common Multiple of 42,108 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 42,108 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(42,108) = 6
common factors(in case of two or more numbers have common factors) = 1
GCF(42,108) x common factors =6 x 1 = 6
LCM(42,108) = ( 42 × 108 ) / 6
LCM(42,108) = 4536 / 6
LCM(42,108) = 756
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FAQs on GCF of Fractions of 393/42, 689/108
1. What is the HCF of 393,689?
The HCF of 393,689 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 393/42, 689/108?
Answer: GCF of Numerators as per given numbers 393/42, 689/108 is
GCF of Numerators i.e. for 393,689 is 1
LCM of denominators i.e. for 42,108 is 756.
Thus, GCF of Fractions is 1/756.Finally, GCF of Fractions for 393/42, 689/108 is 1/756.