Least Common Multiple of 7/800, 21/311, 12/398

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 7/800, 21/311, 12/398 quickly i.e. 84 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 7/800, 21/311, 12/398 is 84.

LCM(7/800, 21/311, 12/398) = 84

LCM of 7/800, 21/311, 12/398

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 7/800,21/311,12/398

Given numbers are 7/800,21/311,12/398

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 7,21,12

Least Common Multiple of Numerators i.e. LCM of 7,21,12 is 84.

GCF of Denominators means GCF of 800,311,398 as per the given fractions.

GCF of 800,311,398 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 7,21,12

LCM of Fractions 7/800,21/311,12/398 is 84

3 7, 21, 12
7 7, 7, 4
1, 1, 4

∴ So the LCM of the given numbers is 3 x 7 x 1 x 1 x 4 = 84

Least Common Multiple of 7,21,12 with GCF Formula

Least Common Multiple of 7,21,12 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 7,21,12 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(7,21,12) = 1

common factors(in case of two or more numbers have common factors) = 21

GCF(7,21,12) x common factors =1 x 21 = 21

LCM(7,21,12) = ( 7 × 21 × 12 ) / 21

LCM(7,21,12) = 1764 / 21

LCM(7,21,12) = 84


Lets's calculate GCF of 800,311,398

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

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 84/1

Therefore the LCM of Fractions 7/800,21/311,12/398 is 84

Greatest Common Factor of 800,311,398 By Matching Biggest Common Factor Method

Greatest Common Factor of 800,311,398 By Matching Biggest Common Factor Method

Factors of 800

List of positive integer factors of 800 that divides 800 without a remainder.

1,2,4,5,8,10,16,20,25,32,40,50,80,100,160,200,400,800

Factors of 311

List of positive integer factors of 311 that divides 311 without a remainder.

1,311

Factors of 398

List of positive integer factors of 398 that divides 398 without a remainder.

1,2,199,398

Greatest Common Factor

We found the factors 800,311,398 . The biggest common factor number is the GCF number.
So the greatest common factor 800,311,398 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 7/800, 21/311, 12/398

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 7/800, 21/311, 12/398?

Answer: LCM of Numerators as per given numbers 7/800, 21/311, 12/398 is

LCM of Numerators i.e. for 7,21,12 is 84

GCF of denominators i.e. for 800,311,398 is 1.

Thus, LCM of Fractions is 84.Finally, LCM of Fractions for 7/800, 21/311, 12/398 is 84.