GCF of 990/18, 642/858
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 990/18, 642/858 i.e 6/2574 easily. The following is the detailed procedure to determine the greatest common factor of fractions 990/18, 642/858.
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 990/18,642/858?
Given fractions are 990/18,642/858
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 990/18,642/858, numerators are 990,642
Denominators are 18,858
The GCF of 990,642 is 6 .
LCM of 18,858 is 2574.
The greatest common factor of 990/18,642/858 = [GCF of 990,642]/[LCM of 18,858]= 6/2574
Therefore, the GCF of 990/18,642/858 is 6/2574.
To find the highest common factor of 990,642, we have to find the factors of both numbers and list the highest common factor.
The factors of 990 are 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
The factors of 642 are 1, 2, 3, 6, 107, 214, 321, 642
The HCF of 990,642 is 6.
Lets's calculate GCF of 990,642
| 2 | 990, 642 |
| 3 | 495, 321 |
| 165, 107 |
∴ So the GCF of the given numbers is 2 x 3 = 6
Greatest Common Factor of 990,642 By Matching Biggest Common Factor Method
Now, list down the factors of 990
:1,2,3,5,6,9,10,11,15,18,22,30,33,45,55,66,90,99,110,165,198,330,495,990
Now, list down the factors of 642
:1,2,3,6,107,214,321,642
Greatest Common Factor
We found the factors 990,642 . The biggest common factor number is the GCF number.
So the greatest common factor 990,642 is 6.
Lets's calculate LCM of 18,858
| 2 | 18, 858 |
| 3 | 9, 429 |
| 3, 143 |
∴ So the LCM of the given numbers is 2 x 3 x 3 x 143 = 2574
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 6/2574
Therefore, the GCF of Fractions 990/18,642/858 is 6/2574
Least Common Multiple of 18,858 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 18,858 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(18,858) = 6
common factors(in case of two or more numbers have common factors) = 1
GCF(18,858) x common factors =6 x 1 = 6
LCM(18,858) = ( 18 × 858 ) / 6
LCM(18,858) = 15444 / 6
LCM(18,858) = 2574
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FAQs on GCF of Fractions of 990/18, 642/858
1. What is the HCF of 990,642?
The HCF of 990,642 is 6
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 990/18, 642/858?
Answer: GCF of Numerators as per given numbers 990/18, 642/858 is
GCF of Numerators i.e. for 990,642 is 6
LCM of denominators i.e. for 18,858 is 2574.
Thus, GCF of Fractions is 6/2574.Finally, GCF of Fractions for 990/18, 642/858 is 6/2574.