GCF of 21/743, 11/423, 393/645
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 21/743, 11/423, 393/645 i.e 1/67572135 easily. The following is the detailed procedure to determine the greatest common factor of fractions 21/743, 11/423, 393/645.
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 21/743,11/423,393/645?
Given fractions are 21/743,11/423,393/645
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 21/743,11/423,393/645, numerators are 21,11,393
Denominators are 743,423,645
The GCF of 21,11,393 is 1 .
LCM of 743,423,645 is 67572135.
The greatest common factor of 21/743,11/423,393/645 = [GCF of 21,11,393]/[LCM of 743,423,645]= 1/67572135
Therefore, the GCF of 21/743,11/423,393/645 is 1/67572135.
To find the highest common factor of 21,11,393, we have to find the factors of both numbers and list the highest common factor.
The factors of 21 are 1, 3, 7, 21
The factors of 11 are 1, 11
The factors of 393 are 1, 3, 131, 393
The HCF of 21,11,393 is 1.
Lets's calculate GCF of 21,11,393
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 21,11,393 By Matching Biggest Common Factor Method
Now, list down the factors of 21
:1,3,7,21
Now, list down the factors of 11
:1,11
Now, list down the factors of 393
:1,3,131,393
Greatest Common Factor
We found the factors 21,11,393 . The biggest common factor number is the GCF number.
So the greatest common factor 21,11,393 is 1.
Lets's calculate LCM of 743,423,645
| 3 | 743, 423, 645 |
| 743, 141, 215 |
∴ So the LCM of the given numbers is 3 x 743 x 141 x 215 = 67572135
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/67572135
Therefore, the GCF of Fractions 21/743,11/423,393/645 is 1/67572135
Least Common Multiple of 743,423,645 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 743,423,645 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(743,423,645) = 1
common factors(in case of two or more numbers have common factors) = 3
GCF(743,423,645) x common factors =1 x 3 = 3
LCM(743,423,645) = ( 743 × 423 × 645 ) / 3
LCM(743,423,645) = 202716405 / 3
LCM(743,423,645) = 67572135
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FAQs on GCF of Fractions of 21/743, 11/423, 393/645
1. What is the HCF of 21,11,393?
The HCF of 21,11,393 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 21/743, 11/423, 393/645?
Answer: GCF of Numerators as per given numbers 21/743, 11/423, 393/645 is
GCF of Numerators i.e. for 21,11,393 is 1
LCM of denominators i.e. for 743,423,645 is 67572135.
Thus, GCF of Fractions is 1/67572135.Finally, GCF of Fractions for 21/743, 11/423, 393/645 is 1/67572135.