Greatest Common Factor of 217/87, 640/42, 685/210

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 217/87, 640/42, 685/210

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

GCF of:

Greatest Common Factor of 217/87,640/42,685/210

Given fractions are 217/87,640/42,685/210

Formula to find GCF of Fractions is

GCF = GCF of Numerators/LCM of Denominators

As per the formula GCF of Fractions let’s split into two parts and find the GCF of Numerators and LCM of Denominators

In the given fractions GCF of Numerators means GCF of 217,640,685

Greatest Common Factor of Numerators i.e. GCF of 217,640,685 is 1 .

LCM of Denominators means LCM of 87,42,210 as per the given fractions.

LCM of 87,42,210 is 6090 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 217,640,685

GCF of Fractions 217/87,640/42,685/210 is 1/6090

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

Greatest Common Factor of 217,640,685 By Matching Biggest Common Factor Method

Greatest Common Factor of 217,640,685 By Matching Biggest Common Factor Method

Factors of 217

List of positive integer factors of 217 that divides 217 without a remainder.

1,7,31,217

Factors of 640

List of positive integer factors of 640 that divides 640 without a remainder.

1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640

Factors of 685

List of positive integer factors of 685 that divides 685 without a remainder.

1,5,137,685

Greatest Common Factor

We found the factors 217,640,685 . The biggest common factor number is the GCF number.
So the greatest common factor 217,640,685 is 1.

Lets's calculate LCM of 87,42,210

2 87, 42, 210
3 87, 21, 105
7 29, 7, 35
29, 1, 5

∴ So the LCM of the given numbers is 2 x 3 x 7 x 29 x 1 x 5 = 6090

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/6090

Therefore, the GCF of Fractions 217/87,640/42,685/210 is 1/6090

Least Common Multiple of 87,42,210 with GCF Formula

Least Common Multiple of 87,42,210 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 87,42,210 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(87,42,210) = 3

common factors(in case of two or more numbers have common factors) = 42

GCF(87,42,210) x common factors =3 x 42 = 126

LCM(87,42,210) = ( 87 × 42 × 210 ) / 126

LCM(87,42,210) = 767340 / 126

LCM(87,42,210) = 6090


GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

Frequently Asked Questions on Fractional GCF of 217/87, 640/42, 685/210

1. How to find GCF in Fractions?

Answer: GCF of fractions can be found using the simple formula GCF of Fractions = GCF of Numerators/LCM of Denominators.

2. What is the GCF of Fractions for 217/87, 640/42, 685/210?

Answer: GCF of Numerators as per given numbers 217/87, 640/42, 685/210 is

GCF of Numerators i.e. for 217,640,685 is 1

LCM of denominators i.e. for 87,42,210 is 6090.

Thus, GCF of Fractions is 1/6090.Finally, GCF of Fractions for 217/87, 640/42, 685/210 is 1/6090.