GCF of 689/16, 399/40, 989/58
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 689/16, 399/40, 989/58 i.e 1/2320 easily. The following is the detailed procedure to determine the greatest common factor of fractions 689/16, 399/40, 989/58.
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 689/16,399/40,989/58?
Given fractions are 689/16,399/40,989/58
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 689/16,399/40,989/58, numerators are 689,399,989
Denominators are 16,40,58
The GCF of 689,399,989 is 1 .
LCM of 16,40,58 is 2320.
The greatest common factor of 689/16,399/40,989/58 = [GCF of 689,399,989]/[LCM of 16,40,58]= 1/2320
Therefore, the GCF of 689/16,399/40,989/58 is 1/2320.
To find the highest common factor of 689,399,989, we have to find the factors of both numbers and list the highest common factor.
The factors of 689 are 1, 13, 53, 689
The factors of 399 are 1, 3, 7, 19, 21, 57, 133, 399
The factors of 989 are 1, 23, 43, 989
The HCF of 689,399,989 is 1.
Lets's calculate GCF of 689,399,989
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 689,399,989 By Matching Biggest Common Factor Method
Now, list down the factors of 689
:1,13,53,689
Now, list down the factors of 399
:1,3,7,19,21,57,133,399
Now, list down the factors of 989
:1,23,43,989
Greatest Common Factor
We found the factors 689,399,989 . The biggest common factor number is the GCF number.
So the greatest common factor 689,399,989 is 1.
Lets's calculate LCM of 16,40,58
| 2 | 16, 40, 58 |
| 2 | 8, 20, 29 |
| 2 | 4, 10, 29 |
| 2, 5, 29 |
∴ So the LCM of the given numbers is 2 x 2 x 2 x 2 x 5 x 29 = 2320
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/2320
Therefore, the GCF of Fractions 689/16,399/40,989/58 is 1/2320
Least Common Multiple of 16,40,58 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 16,40,58 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(16,40,58) = 2
common factors(in case of two or more numbers have common factors) = 8
GCF(16,40,58) x common factors =2 x 8 = 16
LCM(16,40,58) = ( 16 × 40 × 58 ) / 16
LCM(16,40,58) = 37120 / 16
LCM(16,40,58) = 2320
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FAQs on GCF of Fractions of 689/16, 399/40, 989/58
1. What is the HCF of 689,399,989?
The HCF of 689,399,989 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 689/16, 399/40, 989/58?
Answer: GCF of Numerators as per given numbers 689/16, 399/40, 989/58 is
GCF of Numerators i.e. for 689,399,989 is 1
LCM of denominators i.e. for 16,40,58 is 2320.
Thus, GCF of Fractions is 1/2320.Finally, GCF of Fractions for 689/16, 399/40, 989/58 is 1/2320.