Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Know Least Common Multiple of fractions 77/98, 60/38, 11/90, 90/84 quickly i.e. 6930 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.
Least Common Multiple (LCM) of 77/98, 60/38, 11/90, 90/84 is 6930.
LCM(77/98, 60/38, 11/90, 90/84) = 6930
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given numbers are 77/98,60/38,11/90,90/84
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 77,60,11,90
Least Common Multiple of Numerators i.e. LCM of 77,60,11,90 is 13860.
GCF of Denominators means GCF of 98,38,90,84 as per the given fractions.
GCF of 98,38,90,84 is 2 as it is the largest common factor for these numbers.
Lets's calculate LCM of 77,60,11,90
2 | 77, 60, 11, 90 |
3 | 77, 30, 11, 45 |
5 | 77, 10, 11, 15 |
11 | 77, 2, 11, 3 |
7, 2, 1, 3 |
∴ So the LCM of the given numbers is 2 x 3 x 5 x 11 x 7 x 2 x 1 x 3 = 13860
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 77,60,11,90 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(77,60,11,90) = 1
common factors(in case of two or more numbers have common factors) = 330
GCF(77,60,11,90) x common factors =1 x 330 = 330
LCM(77,60,11,90) = ( 77 × 60 × 11 × 90 ) / 330
LCM(77,60,11,90) = 4573800 / 330
LCM(77,60,11,90) = 13860
Lets's calculate GCF of 98,38,90,84
2 | 98, 38, 90, 84 |
49, 19, 45, 42 |
∴ So the GCF of the given numbers is 2 = 2
Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 13860/2
Therefore the LCM of Fractions 77/98,60/38,11/90,90/84 is 6930
Factors of 98
List of positive integer factors of 98 that divides 98 without a remainder.
1,2,7,14,49,98
Factors of 38
List of positive integer factors of 38 that divides 38 without a remainder.
1,2,19,38
Factors of 90
List of positive integer factors of 90 that divides 90 without a remainder.
1,2,3,5,6,9,10,15,18,30,45,90
Factors of 84
List of positive integer factors of 84 that divides 84 without a remainder.
1,2,3,4,6,7,12,14,21,28,42,84
Greatest Common Factor
We found the factors 98,38,90,84 . The biggest common factor number is the GCF number.
So the greatest common factor 98,38,90,84 is 2.
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 77/98, 60/38, 11/90, 90/84?
Answer: LCM of Numerators as per given numbers 77/98, 60/38, 11/90, 90/84 is
LCM of Numerators i.e. for 77,60,11,90 is 13860
GCF of denominators i.e. for 98,38,90,84 is 2.
Thus, LCM of Fractions is 6930.Finally, LCM of Fractions for 77/98, 60/38, 11/90, 90/84 is 6930.