Least Common Multiple of 98/31, 21/10, 686/21

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 98/31, 21/10, 686/21 quickly i.e. 2058 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 98/31, 21/10, 686/21 is 2058.

LCM(98/31, 21/10, 686/21) = 2058

LCM of 98/31, 21/10, 686/21

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 98/31,21/10,686/21

Given numbers are 98/31,21/10,686/21

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 98,21,686

Least Common Multiple of Numerators i.e. LCM of 98,21,686 is 2058.

GCF of Denominators means GCF of 31,10,21 as per the given fractions.

GCF of 31,10,21 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 98,21,686

LCM of Fractions 98/31,21/10,686/21 is 2058

2 98, 21, 686
7 49, 21, 343
7 7, 3, 49
1, 3, 7

∴ So the LCM of the given numbers is 2 x 7 x 7 x 1 x 3 x 7 = 2058

Least Common Multiple of 98,21,686 with GCF Formula

Least Common Multiple of 98,21,686 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 98,21,686 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(98,21,686) = 7

common factors(in case of two or more numbers have common factors) = 98

GCF(98,21,686) x common factors =7 x 98 = 686

LCM(98,21,686) = ( 98 × 21 × 686 ) / 686

LCM(98,21,686) = 1411788 / 686

LCM(98,21,686) = 2058


Lets's calculate GCF of 31,10,21

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

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 2058/1

Therefore the LCM of Fractions 98/31,21/10,686/21 is 2058

Greatest Common Factor of 31,10,21 By Matching Biggest Common Factor Method

Greatest Common Factor of 31,10,21 By Matching Biggest Common Factor Method

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 31,10,21 . The biggest common factor number is the GCF number.
So the greatest common factor 31,10,21 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 98/31, 21/10, 686/21

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 98/31, 21/10, 686/21?

Answer: LCM of Numerators as per given numbers 98/31, 21/10, 686/21 is

LCM of Numerators i.e. for 98,21,686 is 2058

GCF of denominators i.e. for 31,10,21 is 1.

Thus, LCM of Fractions is 2058.Finally, LCM of Fractions for 98/31, 21/10, 686/21 is 2058.