Greatest Common Factor of 90/42, 70/40, 86/980

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 90/42, 70/40, 86/980

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 90/42,70/40,86/980

Given fractions are 90/42,70/40,86/980

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 90,70,86

Greatest Common Factor of Numerators i.e. GCF of 90,70,86 is 2 .

LCM of Denominators means LCM of 42,40,980 as per the given fractions.

LCM of 42,40,980 is 5880 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 90,70,86

GCF of Fractions 90/42,70/40,86/980 is 2/5880

2 90, 70, 86
45, 35, 43

∴ So the GCF of the given numbers is 2 = 2

Greatest Common Factor of 90,70,86 By Matching Biggest Common Factor Method

Greatest Common Factor of 90,70,86 By Matching Biggest Common Factor Method

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Factors of 86

List of positive integer factors of 86 that divides 86 without a remainder.

1,2,43,86

Greatest Common Factor

We found the factors 90,70,86 . The biggest common factor number is the GCF number.
So the greatest common factor 90,70,86 is 2.

Lets's calculate LCM of 42,40,980

2 42, 40, 980
2 21, 20, 490
5 21, 10, 245
7 21, 2, 49
3, 2, 7

∴ So the LCM of the given numbers is 2 x 2 x 5 x 7 x 3 x 2 x 7 = 5880

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 2/5880

Therefore, the GCF of Fractions 90/42,70/40,86/980 is 2/5880

Least Common Multiple of 42,40,980 with GCF Formula

Least Common Multiple of 42,40,980 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 42,40,980 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(42,40,980) = 2

common factors(in case of two or more numbers have common factors) = 140

GCF(42,40,980) x common factors =2 x 140 = 280

LCM(42,40,980) = ( 42 × 40 × 980 ) / 280

LCM(42,40,980) = 1646400 / 280

LCM(42,40,980) = 5880


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 90/42, 70/40, 86/980

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 90/42, 70/40, 86/980?

Answer: GCF of Numerators as per given numbers 90/42, 70/40, 86/980 is

GCF of Numerators i.e. for 90,70,86 is 2

LCM of denominators i.e. for 42,40,980 is 5880.

Thus, GCF of Fractions is 2/5880.Finally, GCF of Fractions for 90/42, 70/40, 86/980 is 2/5880.