Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Know Least Common Multiple of fractions 7/20, 7/69, 3/11, 21/522 quickly i.e. 21 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.
Least Common Multiple (LCM) of 7/20, 7/69, 3/11, 21/522 is 21.
LCM(7/20, 7/69, 3/11, 21/522) = 21
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given numbers are 7/20,7/69,3/11,21/522
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 7,7,3,21
Least Common Multiple of Numerators i.e. LCM of 7,7,3,21 is 21.
GCF of Denominators means GCF of 20,69,11,522 as per the given fractions.
GCF of 20,69,11,522 is 1 as it is the largest common factor for these numbers.
Lets's calculate LCM of 7,7,3,21
3 | 7, 7, 3, 21 |
7 | 7, 7, 1, 7 |
1, 1, 1, 1 |
∴ So the LCM of the given numbers is 3 x 7 x 1 x 1 x 1 x 1 = 21
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 7,7,3,21 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(7,7,3,21) = 1
common factors(in case of two or more numbers have common factors) = 147
GCF(7,7,3,21) x common factors =1 x 147 = 147
LCM(7,7,3,21) = ( 7 × 7 × 3 × 21 ) / 147
LCM(7,7,3,21) = 3087 / 147
LCM(7,7,3,21) = 21
Lets's calculate GCF of 20,69,11,522
∴ So GCF of numbers is 1 because of no common factors present between them.
Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 21/1
Therefore the LCM of Fractions 7/20,7/69,3/11,21/522 is 21
Factors of 20
List of positive integer factors of 20 that divides 20 without a remainder.
1,2,4,5,10,20
Factors of 69
List of positive integer factors of 69 that divides 69 without a remainder.
1,3,23,69
Factors of 11
List of positive integer factors of 11 that divides 11 without a remainder.
1,11
Factors of 522
List of positive integer factors of 522 that divides 522 without a remainder.
1,2,3,6,9,18,29,58,87,174,261,522
Greatest Common Factor
We found the factors 20,69,11,522 . The biggest common factor number is the GCF number.
So the greatest common factor 20,69,11,522 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 7/20, 7/69, 3/11, 21/522?
Answer: LCM of Numerators as per given numbers 7/20, 7/69, 3/11, 21/522 is
LCM of Numerators i.e. for 7,7,3,21 is 21
GCF of denominators i.e. for 20,69,11,522 is 1.
Thus, LCM of Fractions is 21.Finally, LCM of Fractions for 7/20, 7/69, 3/11, 21/522 is 21.