Least Common Multiple of 7/91, 9/12, 42/52, 90/210

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 7/91, 9/12, 42/52, 90/210 quickly i.e. 630 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 7/91, 9/12, 42/52, 90/210 is 630.

LCM(7/91, 9/12, 42/52, 90/210) = 630

LCM of 7/91, 9/12, 42/52, 90/210

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 7/91,9/12,42/52,90/210

Given numbers are 7/91,9/12,42/52,90/210

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 7,9,42,90

Least Common Multiple of Numerators i.e. LCM of 7,9,42,90 is 630.

GCF of Denominators means GCF of 91,12,52,210 as per the given fractions.

GCF of 91,12,52,210 is 1 as it is the largest common factor for these numbers.

Lets's calculate LCM of 7,9,42,90

LCM of Fractions 7/91,9/12,42/52,90/210 is 630

2 7, 9, 42, 90
3 7, 9, 21, 45
3 7, 3, 7, 15
7 7, 1, 7, 5
1, 1, 1, 5

∴ So the LCM of the given numbers is 2 x 3 x 3 x 7 x 1 x 1 x 1 x 5 = 630

Least Common Multiple of 7,9,42,90 with GCF Formula

Least Common Multiple of 7,9,42,90 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 7,9,42,90 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(7,9,42,90) = 1

common factors(in case of two or more numbers have common factors) = 378

GCF(7,9,42,90) x common factors =1 x 378 = 378

LCM(7,9,42,90) = ( 7 × 9 × 42 × 90 ) / 378

LCM(7,9,42,90) = 238140 / 378

LCM(7,9,42,90) = 630


Lets's calculate GCF of 91,12,52,210

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

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 630/1

Therefore the LCM of Fractions 7/91,9/12,42/52,90/210 is 630

Greatest Common Factor of 91,12,52,210 By Matching Biggest Common Factor Method

Greatest Common Factor of 91,12,52,210 By Matching Biggest Common Factor Method

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 52

List of positive integer factors of 52 that divides 52 without a remainder.

1,2,4,13,26,52

Factors of 210

List of positive integer factors of 210 that divides 210 without a remainder.

1,2,3,5,6,7,10,14,15,21,30,35,42,70,105,210

Greatest Common Factor

We found the factors 91,12,52,210 . The biggest common factor number is the GCF number.
So the greatest common factor 91,12,52,210 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 7/91, 9/12, 42/52, 90/210

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 7/91, 9/12, 42/52, 90/210?

Answer: LCM of Numerators as per given numbers 7/91, 9/12, 42/52, 90/210 is

LCM of Numerators i.e. for 7,9,42,90 is 630

GCF of denominators i.e. for 91,12,52,210 is 1.

Thus, LCM of Fractions is 630.Finally, LCM of Fractions for 7/91, 9/12, 42/52, 90/210 is 630.