Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Know Least Common Multiple of fractions 138/420, 912/525 quickly i.e. 20976/105 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.
Least Common Multiple (LCM) of 138/420, 912/525 is 20976/105.
LCM(138/420, 912/525) = 20976/105
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given numbers are 138/420,912/525
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 138,912
Least Common Multiple of Numerators i.e. LCM of 138,912 is 20976.
GCF of Denominators means GCF of 420,525 as per the given fractions.
GCF of 420,525 is 105 as it is the largest common factor for these numbers.
Lets's calculate LCM of 138,912
2 | 138, 912 |
3 | 69, 456 |
23, 152 |
∴ So the LCM of the given numbers is 2 x 3 x 23 x 152 = 20976
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 138,912 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(138,912) = 6
common factors(in case of two or more numbers have common factors) = 1
GCF(138,912) x common factors =6 x 1 = 6
LCM(138,912) = ( 138 × 912 ) / 6
LCM(138,912) = 125856 / 6
LCM(138,912) = 20976
Lets's calculate GCF of 420,525
3 | 420, 525 |
5 | 140, 175 |
7 | 28, 35 |
4, 5 |
∴ So the GCF of the given numbers is 3 x 5 x 7 = 105
Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 20976/105
Therefore the LCM of Fractions 138/420,912/525 is 20976/105
Factors of 420
List of positive integer factors of 420 that divides 420 without a remainder.
1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420
Factors of 525
List of positive integer factors of 525 that divides 525 without a remainder.
1,3,5,7,15,21,25,35,75,105,175,525
Greatest Common Factor
We found the factors 420,525 . The biggest common factor number is the GCF number.
So the greatest common factor 420,525 is 105.
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 138/420, 912/525?
Answer: LCM of Numerators as per given numbers 138/420, 912/525 is
LCM of Numerators i.e. for 138,912 is 20976
GCF of denominators i.e. for 420,525 is 105.
Thus, LCM of Fractions is 20976/105.Finally, LCM of Fractions for 138/420, 912/525 is 20976/105.