GCF of 258/392, 981/640
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 258/392, 981/640 i.e 3/31360 easily. The following is the detailed procedure to determine the greatest common factor of fractions 258/392, 981/640.
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 258/392,981/640?
Given fractions are 258/392,981/640
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 258/392,981/640, numerators are 258,981
Denominators are 392,640
The GCF of 258,981 is 3 .
LCM of 392,640 is 31360.
The greatest common factor of 258/392,981/640 = [GCF of 258,981]/[LCM of 392,640]= 3/31360
Therefore, the GCF of 258/392,981/640 is 3/31360.
To find the highest common factor of 258,981, we have to find the factors of both numbers and list the highest common factor.
The factors of 258 are 1, 2, 3, 6, 43, 86, 129, 258
The factors of 981 are 1, 3, 9, 109, 327, 981
The HCF of 258,981 is 3.
Lets's calculate GCF of 258,981
| 3 | 258, 981 |
| 86, 327 |
∴ So the GCF of the given numbers is 3 = 3
Greatest Common Factor of 258,981 By Matching Biggest Common Factor Method
Now, list down the factors of 258
:1,2,3,6,43,86,129,258
Now, list down the factors of 981
:1,3,9,109,327,981
Greatest Common Factor
We found the factors 258,981 . The biggest common factor number is the GCF number.
So the greatest common factor 258,981 is 3.
Lets's calculate LCM of 392,640
| 2 | 392, 640 |
| 2 | 196, 320 |
| 2 | 98, 160 |
| 49, 80 |
∴ So the LCM of the given numbers is 2 x 2 x 2 x 49 x 80 = 31360
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 3/31360
Therefore, the GCF of Fractions 258/392,981/640 is 3/31360
Least Common Multiple of 392,640 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 392,640 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(392,640) = 8
common factors(in case of two or more numbers have common factors) = 1
GCF(392,640) x common factors =8 x 1 = 8
LCM(392,640) = ( 392 × 640 ) / 8
LCM(392,640) = 250880 / 8
LCM(392,640) = 31360
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FAQs on GCF of Fractions of 258/392, 981/640
1. What is the HCF of 258,981?
The HCF of 258,981 is 3
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 258/392, 981/640?
Answer: GCF of Numerators as per given numbers 258/392, 981/640 is
GCF of Numerators i.e. for 258,981 is 3
LCM of denominators i.e. for 392,640 is 31360.
Thus, GCF of Fractions is 3/31360.Finally, GCF of Fractions for 258/392, 981/640 is 3/31360.