GCF of 38/15, 645/79, 390/17
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 38/15, 645/79, 390/17 i.e 1/20145 easily. The following is the detailed procedure to determine the greatest common factor of fractions 38/15, 645/79, 390/17.
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 38/15,645/79,390/17?
Given fractions are 38/15,645/79,390/17
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 38/15,645/79,390/17, numerators are 38,645,390
Denominators are 15,79,17
The GCF of 38,645,390 is 1 .
LCM of 15,79,17 is 20145.
The greatest common factor of 38/15,645/79,390/17 = [GCF of 38,645,390]/[LCM of 15,79,17]= 1/20145
Therefore, the GCF of 38/15,645/79,390/17 is 1/20145.
To find the highest common factor of 38,645,390, we have to find the factors of both numbers and list the highest common factor.
The factors of 38 are 1, 2, 19, 38
The factors of 645 are 1, 3, 5, 15, 43, 129, 215, 645
The factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
The HCF of 38,645,390 is 1.
Lets's calculate GCF of 38,645,390
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 38,645,390 By Matching Biggest Common Factor Method
Now, list down the factors of 38
:1,2,19,38
Now, list down the factors of 645
:1,3,5,15,43,129,215,645
Now, list down the factors of 390
:1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390
Greatest Common Factor
We found the factors 38,645,390 . The biggest common factor number is the GCF number.
So the greatest common factor 38,645,390 is 1.
Lets's calculate LCM of 15,79,17
Given numbers has no common factors except 1. So, there LCM is their product i.e 20145
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/20145
Therefore, the GCF of Fractions 38/15,645/79,390/17 is 1/20145
Least Common Multiple of 15,79,17 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 15,79,17 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(15,79,17) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(15,79,17) x common factors =1 x 1 = 1
LCM(15,79,17) = ( 15 × 79 × 17 ) / 1
LCM(15,79,17) = 20145 / 1
LCM(15,79,17) = 20145
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FAQs on GCF of Fractions of 38/15, 645/79, 390/17
1. What is the HCF of 38,645,390?
The HCF of 38,645,390 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 38/15, 645/79, 390/17?
Answer: GCF of Numerators as per given numbers 38/15, 645/79, 390/17 is
GCF of Numerators i.e. for 38,645,390 is 1
LCM of denominators i.e. for 15,79,17 is 20145.
Thus, GCF of Fractions is 1/20145.Finally, GCF of Fractions for 38/15, 645/79, 390/17 is 1/20145.