GCF of 5/25, 1/74, 2/21, 77/840
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 5/25, 1/74, 2/21, 77/840 i.e 1/155400 easily. The following is the detailed procedure to determine the greatest common factor of fractions 5/25, 1/74, 2/21, 77/840.
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 5/25,1/74,2/21,77/840?
Given fractions are 5/25,1/74,2/21,77/840
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 5/25,1/74,2/21,77/840, numerators are 5,1,2,77
Denominators are 25,74,21,840
The GCF of 5,1,2,77 is 1 .
LCM of 25,74,21,840 is 155400.
The greatest common factor of 5/25,1/74,2/21,77/840 = [GCF of 5,1,2,77]/[LCM of 25,74,21,840]= 1/155400
Therefore, the GCF of 5/25,1/74,2/21,77/840 is 1/155400.
To find the highest common factor of 5,1,2,77, we have to find the factors of both numbers and list the highest common factor.
The factors of 5 are 1, 5
The factors of 1 are 1
The factors of 2 are 1, 2
The factors of 77 are 1, 7, 11, 77
The HCF of 5,1,2,77 is 1.
Lets's calculate GCF of 5,1,2,77
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 5,1,2,77 By Matching Biggest Common Factor Method
Now, list down the factors of 5
:1,5
Now, list down the factors of 1
:1
Now, list down the factors of 2
:1,2
Now, list down the factors of 77
:1,7,11,77
Greatest Common Factor
We found the factors 5,1,2,77 . The biggest common factor number is the GCF number.
So the greatest common factor 5,1,2,77 is 1.
Lets's calculate LCM of 25,74,21,840
| 2 | 25, 74, 21, 840 |
| 3 | 25, 37, 21, 420 |
| 5 | 25, 37, 7, 140 |
| 7 | 5, 37, 7, 28 |
| 5, 37, 1, 4 |
∴ So the LCM of the given numbers is 2 x 3 x 5 x 7 x 5 x 37 x 1 x 4 = 155400
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/155400
Therefore, the GCF of Fractions 5/25,1/74,2/21,77/840 is 1/155400
Least Common Multiple of 25,74,21,840 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 25,74,21,840 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(25,74,21,840) = 1
common factors(in case of two or more numbers have common factors) = 210
GCF(25,74,21,840) x common factors =1 x 210 = 210
LCM(25,74,21,840) = ( 25 × 74 × 21 × 840 ) / 210
LCM(25,74,21,840) = 32634000 / 210
LCM(25,74,21,840) = 155400
GCF of Fractions Calculation Examples
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FAQs on GCF of Fractions of 5/25, 1/74, 2/21, 77/840
1. What is the HCF of 5,1,2,77?
The HCF of 5,1,2,77 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 5/25, 1/74, 2/21, 77/840?
Answer: GCF of Numerators as per given numbers 5/25, 1/74, 2/21, 77/840 is
GCF of Numerators i.e. for 5,1,2,77 is 1
LCM of denominators i.e. for 25,74,21,840 is 155400.
Thus, GCF of Fractions is 1/155400.Finally, GCF of Fractions for 5/25, 1/74, 2/21, 77/840 is 1/155400.