Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Know Least Common Multiple of fractions 18/39, 81/79, 85/61, 139/77 quickly i.e. 1914030 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.
Least Common Multiple (LCM) of 18/39, 81/79, 85/61, 139/77 is 1914030.
LCM(18/39, 81/79, 85/61, 139/77) = 1914030
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given numbers are 18/39,81/79,85/61,139/77
Formula to find LCM of Fractions is
LCM = LCM of Numerators/GCF of Denominators
As per the formula LCM of Fractions let’s split into two parts and find the LCM of Numerators and GCF of Denominators
In the given fractions LCM of Numerators means LCM of 18,81,85,139
Least Common Multiple of Numerators i.e. LCM of 18,81,85,139 is 1914030.
GCF of Denominators means GCF of 39,79,61,77 as per the given fractions.
GCF of 39,79,61,77 is 1 as it is the largest common factor for these numbers.
Lets's calculate LCM of 18,81,85,139
3 | 18, 81, 85, 139 |
3 | 6, 27, 85, 139 |
2, 9, 85, 139 |
∴ So the LCM of the given numbers is 3 x 3 x 2 x 9 x 85 x 139 = 1914030
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 18,81,85,139 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(18,81,85,139) = 1
common factors(in case of two or more numbers have common factors) = 9
GCF(18,81,85,139) x common factors =1 x 9 = 9
LCM(18,81,85,139) = ( 18 × 81 × 85 × 139 ) / 9
LCM(18,81,85,139) = 17226270 / 9
LCM(18,81,85,139) = 1914030
Lets's calculate GCF of 39,79,61,77
∴ So GCF of numbers is 1 because of no common factors present between them.
Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 1914030/1
Therefore the LCM of Fractions 18/39,81/79,85/61,139/77 is 1914030
Factors of 39
List of positive integer factors of 39 that divides 39 without a remainder.
1,3,13,39
Factors of 79
List of positive integer factors of 79 that divides 79 without a remainder.
1,79
Factors of 61
List of positive integer factors of 61 that divides 61 without a remainder.
1,61
Factors of 77
List of positive integer factors of 77 that divides 77 without a remainder.
1,7,11,77
Greatest Common Factor
We found the factors 39,79,61,77 . The biggest common factor number is the GCF number.
So the greatest common factor 39,79,61,77 is 1.
Here are some samples of LCM of Fractions calculations.
Here are some samples of LCM of Fractions calculations.
1. How to find LCM in Fractions?
Answer: LCM of fractions can be found using the simple formula LCM of Fractions = LCM of Numerators/GCF of Denominators.
2. What is the LCM of Fractions for 18/39, 81/79, 85/61, 139/77?
Answer: LCM of Numerators as per given numbers 18/39, 81/79, 85/61, 139/77 is
LCM of Numerators i.e. for 18,81,85,139 is 1914030
GCF of denominators i.e. for 39,79,61,77 is 1.
Thus, LCM of Fractions is 1914030.Finally, LCM of Fractions for 18/39, 81/79, 85/61, 139/77 is 1914030.