Greatest Common Factor of 77/80, 45/19, 15/19, 38/16

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 77/80, 45/19, 15/19, 38/16

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 77/80,45/19,15/19,38/16

Given fractions are 77/80,45/19,15/19,38/16

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 77,45,15,38

Greatest Common Factor of Numerators i.e. GCF of 77,45,15,38 is 1 .

LCM of Denominators means LCM of 80,19,19,16 as per the given fractions.

LCM of 80,19,19,16 is 1520 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 77,45,15,38

GCF of Fractions 77/80,45/19,15/19,38/16 is 1/1520

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

Greatest Common Factor of 77,45,15,38 By Matching Biggest Common Factor Method

Greatest Common Factor of 77,45,15,38 By Matching Biggest Common Factor Method

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Greatest Common Factor

We found the factors 77,45,15,38 . The biggest common factor number is the GCF number.
So the greatest common factor 77,45,15,38 is 1.

Lets's calculate LCM of 80,19,19,16

2 80, 19, 19, 16
2 40, 19, 19, 8
2 20, 19, 19, 4
2 10, 19, 19, 2
19 5, 19, 19, 1
5, 1, 1, 1

∴ So the LCM of the given numbers is 2 x 2 x 2 x 2 x 19 x 5 x 1 x 1 x 1 = 1520

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/1520

Therefore, the GCF of Fractions 77/80,45/19,15/19,38/16 is 1/1520

Least Common Multiple of 80,19,19,16 with GCF Formula

Least Common Multiple of 80,19,19,16 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 80,19,19,16 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(80,19,19,16) = 1

common factors(in case of two or more numbers have common factors) = 304

GCF(80,19,19,16) x common factors =1 x 304 = 304

LCM(80,19,19,16) = ( 80 × 19 × 19 × 16 ) / 304

LCM(80,19,19,16) = 462080 / 304

LCM(80,19,19,16) = 1520


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 77/80, 45/19, 15/19, 38/16

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 77/80, 45/19, 15/19, 38/16?

Answer: GCF of Numerators as per given numbers 77/80, 45/19, 15/19, 38/16 is

GCF of Numerators i.e. for 77,45,15,38 is 1

LCM of denominators i.e. for 80,19,19,16 is 1520.

Thus, GCF of Fractions is 1/1520.Finally, GCF of Fractions for 77/80, 45/19, 15/19, 38/16 is 1/1520.