Least Common Multiple of 421/7, 21/28

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 421/7, 21/28 quickly i.e. 1263 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 421/7, 21/28 is 1263.

LCM(421/7, 21/28) = 1263

LCM of 421/7, 21/28

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 421/7,21/28

Given numbers are 421/7,21/28

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 421,21

Least Common Multiple of Numerators i.e. LCM of 421,21 is 8841.

GCF of Denominators means GCF of 7,28 as per the given fractions.

GCF of 7,28 is 7 as it is the largest common factor for these numbers.

Lets's calculate LCM of 421,21

LCM of Fractions 421/7,21/28 is 1263

Given numbers has no common factors except 1. So, there LCM is their product i.e 8841

Least Common Multiple of 421,21 with GCF Formula

Least Common Multiple of 421,21 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 421,21 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(421,21) = 1

common factors(in case of two or more numbers have common factors) = 1

GCF(421,21) x common factors =1 x 1 = 1

LCM(421,21) = ( 421 × 21 ) / 1

LCM(421,21) = 8841 / 1

LCM(421,21) = 8841


Lets's calculate GCF of 7,28

7 7, 28
1, 4

∴ So the GCF of the given numbers is 7 = 7

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 8841/7

Therefore the LCM of Fractions 421/7,21/28 is 1263

Greatest Common Factor of 7,28 By Matching Biggest Common Factor Method

Greatest Common Factor of 7,28 By Matching Biggest Common Factor Method

Factors of 7

List of positive integer factors of 7 that divides 7 without a remainder.

1,7

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Greatest Common Factor

We found the factors 7,28 . The biggest common factor number is the GCF number.
So the greatest common factor 7,28 is 7.


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 421/7, 21/28

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 421/7, 21/28?

Answer: LCM of Numerators as per given numbers 421/7, 21/28 is

LCM of Numerators i.e. for 421,21 is 8841

GCF of denominators i.e. for 7,28 is 7.

Thus, LCM of Fractions is 1263.Finally, LCM of Fractions for 421/7, 21/28 is 1263.