GCF of 280/398, 945/858
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 280/398, 945/858 i.e 35/170742 easily. The following is the detailed procedure to determine the greatest common factor of fractions 280/398, 945/858.
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 280/398,945/858?
Given fractions are 280/398,945/858
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 280/398,945/858, numerators are 280,945
Denominators are 398,858
The GCF of 280,945 is 35 .
LCM of 398,858 is 170742.
The greatest common factor of 280/398,945/858 = [GCF of 280,945]/[LCM of 398,858]= 35/170742
Therefore, the GCF of 280/398,945/858 is 35/170742.
To find the highest common factor of 280,945, we have to find the factors of both numbers and list the highest common factor.
The factors of 280 are 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
The factors of 945 are 1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945
The HCF of 280,945 is 35.
Lets's calculate GCF of 280,945
| 5 | 280, 945 |
| 7 | 56, 189 |
| 8, 27 |
∴ So the GCF of the given numbers is 5 x 7 = 35
Greatest Common Factor of 280,945 By Matching Biggest Common Factor Method
Now, list down the factors of 280
:1,2,4,5,7,8,10,14,20,28,35,40,56,70,140,280
Now, list down the factors of 945
:1,3,5,7,9,15,21,27,35,45,63,105,135,189,315,945
Greatest Common Factor
We found the factors 280,945 . The biggest common factor number is the GCF number.
So the greatest common factor 280,945 is 35.
Lets's calculate LCM of 398,858
| 2 | 398, 858 |
| 199, 429 |
∴ So the LCM of the given numbers is 2 x 199 x 429 = 170742
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 35/170742
Therefore, the GCF of Fractions 280/398,945/858 is 35/170742
Least Common Multiple of 398,858 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 398,858 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(398,858) = 2
common factors(in case of two or more numbers have common factors) = 1
GCF(398,858) x common factors =2 x 1 = 2
LCM(398,858) = ( 398 × 858 ) / 2
LCM(398,858) = 341484 / 2
LCM(398,858) = 170742
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FAQs on GCF of Fractions of 280/398, 945/858
1. What is the HCF of 280,945?
The HCF of 280,945 is 35
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 280/398, 945/858?
Answer: GCF of Numerators as per given numbers 280/398, 945/858 is
GCF of Numerators i.e. for 280,945 is 35
LCM of denominators i.e. for 398,858 is 170742.
Thus, GCF of Fractions is 35/170742.Finally, GCF of Fractions for 280/398, 945/858 is 35/170742.