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GCF of 390/857, 870/725

Created By : Veerendra
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023


Use our free GCF of Fractions Calculator tool to compute the GCF of 390/857, 870/725 i.e 30/621325 easily. The following is the detailed procedure to determine the greatest common factor of fractions 390/857, 870/725.

Enter two or more fractions separated by "commas"

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

GCF of:

What is the GCF of 390/857,870/725?

Given fractions are 390/857,870/725

To find the GCF of fractions, we have to find the GCF of numerator numbers and LCM of denominator numbers. Its formula is given by

GCF of Fraction = Greatest Common Factor of Numerator/Least Common Multiple of Denominators

In the fractions 390/857,870/725, numerators are 390,870

Denominators are 857,725

The GCF of 390,870 is 30 .

LCM of 857,725 is 621325.

The greatest common factor of 390/857,870/725 = [GCF of 390,870]/[LCM of 857,725]= 30/621325

Therefore, the GCF of 390/857,870/725 is 30/621325.

Greatest Common Factor of 390,870

To find the highest common factor of 390,870, we have to find the factors of both numbers and list the highest common factor.

The factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

The factors of 870 are 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870

The HCF of 390,870 is 30.

Lets's calculate GCF of 390,870

Greatest Common Factor (GCF) of 390,870 By Common Division

2 390, 870
3 195, 435
5 65, 145
13, 29

∴ So the GCF of the given numbers is 2 x 3 x 5 = 30

Greatest Common Factor of 390,870 By Matching Biggest Common Factor Method

Greatest Common Factor of 390,870 By Matching Biggest Common Factor Method

Now, list down the factors of 390

:

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

Now, list down the factors of 870

:

1,2,3,5,6,10,15,29,30,58,87,145,174,290,435,870

Greatest Common Factor

We found the factors 390,870 . The biggest common factor number is the GCF number.
So the greatest common factor 390,870 is 30.


Lets's calculate LCM of 857,725

Lowest Common Multiple of 857,725 using Common Division

Given numbers has no common factors except 1. So, there LCM is their product i.e 621325

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 30/621325

Therefore, the GCF of Fractions 390/857,870/725 is 30/621325

Least Common Multiple of 857,725 with GCF Formula

Least Common Multiple of 857,725 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 857,725 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(857,725) = 1

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

GCF(857,725) x common factors =1 x 1 = 1

LCM(857,725) = ( 857 × 725 ) / 1

LCM(857,725) = 621325 / 1

LCM(857,725) = 621325


GCF of Fractions Calculation Examples

FAQs on GCF of Fractions of 390/857, 870/725

1. What is the HCF of 390,870?

The HCF of 390,870 is 30

2. What is the GCF of a fraction?

The GCF of a fraction is defined as the greatest fraction that divides exactly into 2 or more fractions.

3. 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.

4. What is the GCF of Fractions for 390/857, 870/725?

Answer: GCF of Numerators as per given numbers 390/857, 870/725 is

GCF of Numerators i.e. for 390,870 is 30

LCM of denominators i.e. for 857,725 is 621325.

Thus, GCF of Fractions is 30/621325.Finally, GCF of Fractions for 390/857, 870/725 is 30/621325.