Use our free GCF of Fractions Calculator tool to compute the GCF of 71/99, 37/60, 39/40, 21/51 i.e 1/67320 easily. The following is the detailed procedure to determine the greatest common factor of fractions 71/99, 37/60, 39/40, 21/51.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 71/99,37/60,39/40,21/51
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 71/99,37/60,39/40,21/51, numerators are 71,37,39,21
Denominators are 99,60,40,51
The GCF of 71,37,39,21 is 1 .
LCM of 99,60,40,51 is 67320.
The greatest common factor of 71/99,37/60,39/40,21/51 = [GCF of 71,37,39,21]/[LCM of 99,60,40,51]= 1/67320
Therefore, the GCF of 71/99,37/60,39/40,21/51 is 1/67320.
To find the highest common factor of 71,37,39,21, we have to find the factors of both numbers and list the highest common factor.
The factors of 71 are 1, 71
The factors of 37 are 1, 37
The factors of 39 are 1, 3, 13, 39
The factors of 21 are 1, 3, 7, 21
The HCF of 71,37,39,21 is 1.
Lets's calculate GCF of 71,37,39,21
∴ So GCF of numbers is 1 because of no common factors present between them.
Now, list down the factors of 71
:1,71
Now, list down the factors of 37
:1,37
Now, list down the factors of 39
:1,3,13,39
Now, list down the factors of 21
:1,3,7,21
Greatest Common Factor
We found the factors 71,37,39,21 . The biggest common factor number is the GCF number.
So the greatest common factor 71,37,39,21 is 1.
Lets's calculate LCM of 99,60,40,51
2 | 99, 60, 40, 51 |
2 | 99, 30, 20, 51 |
3 | 99, 15, 10, 51 |
5 | 33, 5, 10, 17 |
33, 1, 2, 17 |
∴ So the LCM of the given numbers is 2 x 2 x 3 x 5 x 33 x 1 x 2 x 17 = 67320
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/67320
Therefore, the GCF of Fractions 71/99,37/60,39/40,21/51 is 1/67320
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 99,60,40,51 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(99,60,40,51) = 1
common factors(in case of two or more numbers have common factors) = 180
GCF(99,60,40,51) x common factors =1 x 180 = 180
LCM(99,60,40,51) = ( 99 × 60 × 40 × 51 ) / 180
LCM(99,60,40,51) = 12117600 / 180
LCM(99,60,40,51) = 67320
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 71,37,39,21?
The HCF of 71,37,39,21 is 1
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 71/99, 37/60, 39/40, 21/51?
Answer: GCF of Numerators as per given numbers 71/99, 37/60, 39/40, 21/51 is
GCF of Numerators i.e. for 71,37,39,21 is 1
LCM of denominators i.e. for 99,60,40,51 is 67320.
Thus, GCF of Fractions is 1/67320.Finally, GCF of Fractions for 71/99, 37/60, 39/40, 21/51 is 1/67320.