GCF of 665/90, 789/36, 856/121
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 665/90, 789/36, 856/121 i.e 1/21780 easily. The following is the detailed procedure to determine the greatest common factor of fractions 665/90, 789/36, 856/121.
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 665/90,789/36,856/121?
Given fractions are 665/90,789/36,856/121
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 665/90,789/36,856/121, numerators are 665,789,856
Denominators are 90,36,121
The GCF of 665,789,856 is 1 .
LCM of 90,36,121 is 21780.
The greatest common factor of 665/90,789/36,856/121 = [GCF of 665,789,856]/[LCM of 90,36,121]= 1/21780
Therefore, the GCF of 665/90,789/36,856/121 is 1/21780.
To find the highest common factor of 665,789,856, we have to find the factors of both numbers and list the highest common factor.
The factors of 665 are 1, 5, 7, 19, 35, 95, 133, 665
The factors of 789 are 1, 3, 263, 789
The factors of 856 are 1, 2, 4, 8, 107, 214, 428, 856
The HCF of 665,789,856 is 1.
Lets's calculate GCF of 665,789,856
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 665,789,856 By Matching Biggest Common Factor Method
Now, list down the factors of 665
:1,5,7,19,35,95,133,665
Now, list down the factors of 789
:1,3,263,789
Now, list down the factors of 856
:1,2,4,8,107,214,428,856
Greatest Common Factor
We found the factors 665,789,856 . The biggest common factor number is the GCF number.
So the greatest common factor 665,789,856 is 1.
Lets's calculate LCM of 90,36,121
| 2 | 90, 36, 121 |
| 3 | 45, 18, 121 |
| 3 | 15, 6, 121 |
| 5, 2, 121 |
∴ So the LCM of the given numbers is 2 x 3 x 3 x 5 x 2 x 121 = 21780
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/21780
Therefore, the GCF of Fractions 665/90,789/36,856/121 is 1/21780
Least Common Multiple of 90,36,121 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 90,36,121 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(90,36,121) = 1
common factors(in case of two or more numbers have common factors) = 18
GCF(90,36,121) x common factors =1 x 18 = 18
LCM(90,36,121) = ( 90 × 36 × 121 ) / 18
LCM(90,36,121) = 392040 / 18
LCM(90,36,121) = 21780
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FAQs on GCF of Fractions of 665/90, 789/36, 856/121
1. What is the HCF of 665,789,856?
The HCF of 665,789,856 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 665/90, 789/36, 856/121?
Answer: GCF of Numerators as per given numbers 665/90, 789/36, 856/121 is
GCF of Numerators i.e. for 665,789,856 is 1
LCM of denominators i.e. for 90,36,121 is 21780.
Thus, GCF of Fractions is 1/21780.Finally, GCF of Fractions for 665/90, 789/36, 856/121 is 1/21780.