Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 30/217,381/690
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 30,381
Greatest Common Factor of Numerators i.e. GCF of 30,381 is 3 .
LCM of Denominators means LCM of 217,690 as per the given fractions.
LCM of 217,690 is 149730 as it is the smallest common factor for both these numbers.
Lets's calculate GCF of 30,381
3 | 30, 381 |
10, 127 |
∴ So the GCF of the given numbers is 3 = 3
Factors of 30
List of positive integer factors of 30 that divides 30 without a remainder.
1,2,3,5,6,10,15,30
Factors of 381
List of positive integer factors of 381 that divides 381 without a remainder.
1,3,127,381
Greatest Common Factor
We found the factors 30,381 . The biggest common factor number is the GCF number.
So the greatest common factor 30,381 is 3.
Lets's calculate LCM of 217,690
Given numbers has no common factors except 1. So, there LCM is their product i.e 149730
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 3/149730
Therefore, the GCF of Fractions 30/217,381/690 is 3/149730
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 217,690 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(217,690) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(217,690) x common factors =1 x 1 = 1
LCM(217,690) = ( 217 × 690 ) / 1
LCM(217,690) = 149730 / 1
LCM(217,690) = 149730
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 30/217, 381/690?
Answer: GCF of Numerators as per given numbers 30/217, 381/690 is
GCF of Numerators i.e. for 30,381 is 3
LCM of denominators i.e. for 217,690 is 149730.
Thus, GCF of Fractions is 3/149730.Finally, GCF of Fractions for 30/217, 381/690 is 3/149730.