Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Know Least Common Multiple of fractions 81/56, 87/13, 27/20, 79/100 quickly i.e. 185571 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.
Least Common Multiple (LCM) of 81/56, 87/13, 27/20, 79/100 is 185571.
LCM(81/56, 87/13, 27/20, 79/100) = 185571
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given numbers are 81/56,87/13,27/20,79/100
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 81,87,27,79
Least Common Multiple of Numerators i.e. LCM of 81,87,27,79 is 185571.
GCF of Denominators means GCF of 56,13,20,100 as per the given fractions.
GCF of 56,13,20,100 is 1 as it is the largest common factor for these numbers.
Lets's calculate LCM of 81,87,27,79
3 | 81, 87, 27, 79 |
3 | 27, 29, 9, 79 |
3 | 3, 29, 9, 79 |
1, 29, 3, 79 |
∴ So the LCM of the given numbers is 3 x 3 x 3 x 1 x 29 x 3 x 79 = 185571
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 81,87,27,79 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(81,87,27,79) = 1
common factors(in case of two or more numbers have common factors) = 81
GCF(81,87,27,79) x common factors =1 x 81 = 81
LCM(81,87,27,79) = ( 81 × 87 × 27 × 79 ) / 81
LCM(81,87,27,79) = 15031251 / 81
LCM(81,87,27,79) = 185571
Lets's calculate GCF of 56,13,20,100
∴ So GCF of numbers is 1 because of no common factors present between them.
Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 185571/1
Therefore the LCM of Fractions 81/56,87/13,27/20,79/100 is 185571
Factors of 56
List of positive integer factors of 56 that divides 56 without a remainder.
1,2,4,7,8,14,28,56
Factors of 13
List of positive integer factors of 13 that divides 13 without a remainder.
1,13
Factors of 20
List of positive integer factors of 20 that divides 20 without a remainder.
1,2,4,5,10,20
Factors of 100
List of positive integer factors of 100 that divides 100 without a remainder.
1,2,4,5,10,20,25,50,100
Greatest Common Factor
We found the factors 56,13,20,100 . The biggest common factor number is the GCF number.
So the greatest common factor 56,13,20,100 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 81/56, 87/13, 27/20, 79/100?
Answer: LCM of Numerators as per given numbers 81/56, 87/13, 27/20, 79/100 is
LCM of Numerators i.e. for 81,87,27,79 is 185571
GCF of denominators i.e. for 56,13,20,100 is 1.
Thus, LCM of Fractions is 185571.Finally, LCM of Fractions for 81/56, 87/13, 27/20, 79/100 is 185571.