Least Common Multiple of 80/58, 91/69, 21/78, 12/84

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 80/58, 91/69, 21/78, 12/84 quickly i.e. 21840 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 80/58, 91/69, 21/78, 12/84 is 21840.

LCM(80/58, 91/69, 21/78, 12/84) = 21840

LCM of 80/58, 91/69, 21/78, 12/84

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

LCM of:

Least Common Multiple of 80/58,91/69,21/78,12/84

Given numbers are 80/58,91/69,21/78,12/84

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 80,91,21,12

Least Common Multiple of Numerators i.e. LCM of 80,91,21,12 is 21840.

GCF of Denominators means GCF of 58,69,78,84 as per the given fractions.

GCF of 58,69,78,84 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 80,91,21,12

LCM of Fractions 80/58,91/69,21/78,12/84 is 21840

2 80, 91, 21, 12
2 40, 91, 21, 6
3 20, 91, 21, 3
7 20, 91, 7, 1
20, 13, 1, 1

∴ So the LCM of the given numbers is 2 x 2 x 3 x 7 x 20 x 13 x 1 x 1 = 21840

Least Common Multiple of 80,91,21,12 with GCF Formula

Least Common Multiple of 80,91,21,12 with GCF Formula

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 80,91,21,12 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(80,91,21,12) = 1

common factors(in case of two or more numbers have common factors) = 84

GCF(80,91,21,12) x common factors =1 x 84 = 84

LCM(80,91,21,12) = ( 80 × 91 × 21 × 12 ) / 84

LCM(80,91,21,12) = 1834560 / 84

LCM(80,91,21,12) = 21840


Lets's calculate GCF of 58,69,78,84

∴ So GCF of numbers is 1 because of no common factors present between them.

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 21840/1

Therefore the LCM of Fractions 80/58,91/69,21/78,12/84 is 21840

Greatest Common Factor of 58,69,78,84 By Matching Biggest Common Factor Method

Greatest Common Factor of 58,69,78,84 By Matching Biggest Common Factor Method

Factors of 58

List of positive integer factors of 58 that divides 58 without a remainder.

1,2,29,58

Factors of 69

List of positive integer factors of 69 that divides 69 without a remainder.

1,3,23,69

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

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 58,69,78,84 . The biggest common factor number is the GCF number.
So the greatest common factor 58,69,78,84 is 1.


LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

Frequently Asked Questions on Fractional LCM of 80/58, 91/69, 21/78, 12/84

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 80/58, 91/69, 21/78, 12/84?

Answer: LCM of Numerators as per given numbers 80/58, 91/69, 21/78, 12/84 is

LCM of Numerators i.e. for 80,91,21,12 is 21840

GCF of denominators i.e. for 58,69,78,84 is 1.

Thus, LCM of Fractions is 21840.Finally, LCM of Fractions for 80/58, 91/69, 21/78, 12/84 is 21840.