Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 7/85,78/44,42/19,86/68
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 7,78,42,86
Greatest Common Factor of Numerators i.e. GCF of 7,78,42,86 is 1 .
LCM of Denominators means LCM of 85,44,19,68 as per the given fractions.
LCM of 85,44,19,68 is 71060 as it is the smallest common factor for both these numbers.
Lets's calculate GCF of 7,78,42,86
∴ So GCF of numbers is 1 because of no common factors present between them.
Factors of 7
List of positive integer factors of 7 that divides 7 without a remainder.
1,7
Factors of 78
List of positive integer factors of 78 that divides 78 without a remainder.
1,2,3,6,13,26,39,78
Factors of 42
List of positive integer factors of 42 that divides 42 without a remainder.
1,2,3,6,7,14,21,42
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 7,78,42,86 . The biggest common factor number is the GCF number.
So the greatest common factor 7,78,42,86 is 1.
Lets's calculate LCM of 85,44,19,68
2 | 85, 44, 19, 68 |
2 | 85, 22, 19, 34 |
17 | 85, 11, 19, 17 |
5, 11, 19, 1 |
∴ So the LCM of the given numbers is 2 x 2 x 17 x 5 x 11 x 19 x 1 = 71060
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/71060
Therefore, the GCF of Fractions 7/85,78/44,42/19,86/68 is 1/71060
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 85,44,19,68 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(85,44,19,68) = 1
common factors(in case of two or more numbers have common factors) = 68
GCF(85,44,19,68) x common factors =1 x 68 = 68
LCM(85,44,19,68) = ( 85 × 44 × 19 × 68 ) / 68
LCM(85,44,19,68) = 4832080 / 68
LCM(85,44,19,68) = 71060
Here are some samples of GCF of Fractions calculations.
Here are some samples of GCF of Fractions calculations.
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 7/85, 78/44, 42/19, 86/68?
Answer: GCF of Numerators as per given numbers 7/85, 78/44, 42/19, 86/68 is
GCF of Numerators i.e. for 7,78,42,86 is 1
LCM of denominators i.e. for 85,44,19,68 is 71060.
Thus, GCF of Fractions is 1/71060.Finally, GCF of Fractions for 7/85, 78/44, 42/19, 86/68 is 1/71060.