Least Common Multiple of 72/42, 85/21, 55/882

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 72/42, 85/21, 55/882 quickly i.e. 67320/21 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 72/42, 85/21, 55/882 is 67320/21.

LCM(72/42, 85/21, 55/882) = 67320/21

LCM of 72/42, 85/21, 55/882

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 72/42,85/21,55/882

Given numbers are 72/42,85/21,55/882

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 72,85,55

Least Common Multiple of Numerators i.e. LCM of 72,85,55 is 67320.

GCF of Denominators means GCF of 42,21,882 as per the given fractions.

GCF of 42,21,882 is 21 as it is the largest common factor for these numbers.

Lets's calculate LCM of 72,85,55

LCM of Fractions 72/42,85/21,55/882 is 67320/21

5 72, 85, 55
72, 17, 11

∴ So the LCM of the given numbers is 5 x 72 x 17 x 11 = 67320

Least Common Multiple of 72,85,55 with GCF Formula

Least Common Multiple of 72,85,55 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 72,85,55 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(72,85,55) = 1

common factors(in case of two or more numbers have common factors) = 5

GCF(72,85,55) x common factors =1 x 5 = 5

LCM(72,85,55) = ( 72 × 85 × 55 ) / 5

LCM(72,85,55) = 336600 / 5

LCM(72,85,55) = 67320


Lets's calculate GCF of 42,21,882

3 42, 21, 882
7 14, 7, 294
2, 1, 42

∴ So the GCF of the given numbers is 3 x 7 = 21

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 67320/21

Therefore the LCM of Fractions 72/42,85/21,55/882 is 67320/21

Greatest Common Factor of 42,21,882 By Matching Biggest Common Factor Method

Greatest Common Factor of 42,21,882 By Matching Biggest Common Factor Method

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 882

List of positive integer factors of 882 that divides 882 without a remainder.

1,2,3,6,7,9,14,18,21,42,49,63,98,126,147,294,441,882

Greatest Common Factor

We found the factors 42,21,882 . The biggest common factor number is the GCF number.
So the greatest common factor 42,21,882 is 21.


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 72/42, 85/21, 55/882

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 72/42, 85/21, 55/882?

Answer: LCM of Numerators as per given numbers 72/42, 85/21, 55/882 is

LCM of Numerators i.e. for 72,85,55 is 67320

GCF of denominators i.e. for 42,21,882 is 21.

Thus, LCM of Fractions is 67320/21.Finally, LCM of Fractions for 72/42, 85/21, 55/882 is 67320/21.