Use our free GCF of Fractions Calculator tool to compute the GCF of 42/81, 749/12, 770/479 i.e 7/155196 easily. The following is the detailed procedure to determine the greatest common factor of fractions 42/81, 749/12, 770/479.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
Given fractions are 42/81,749/12,770/479
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 42/81,749/12,770/479, numerators are 42,749,770
Denominators are 81,12,479
The GCF of 42,749,770 is 7 .
LCM of 81,12,479 is 155196.
The greatest common factor of 42/81,749/12,770/479 = [GCF of 42,749,770]/[LCM of 81,12,479]= 7/155196
Therefore, the GCF of 42/81,749/12,770/479 is 7/155196.
To find the highest common factor of 42,749,770, we have to find the factors of both numbers and list the highest common factor.
The factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42
The factors of 749 are 1, 7, 107, 749
The factors of 770 are 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
The HCF of 42,749,770 is 7.
Lets's calculate GCF of 42,749,770
7 | 42, 749, 770 |
6, 107, 110 |
∴ So the GCF of the given numbers is 7 = 7
Now, list down the factors of 42
:1,2,3,6,7,14,21,42
Now, list down the factors of 749
:1,7,107,749
Now, list down the factors of 770
:1,2,5,7,10,11,14,22,35,55,70,77,110,154,385,770
Greatest Common Factor
We found the factors 42,749,770 . The biggest common factor number is the GCF number.
So the greatest common factor 42,749,770 is 7.
Lets's calculate LCM of 81,12,479
3 | 81, 12, 479 |
27, 4, 479 |
∴ So the LCM of the given numbers is 3 x 27 x 4 x 479 = 155196
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 7/155196
Therefore, the GCF of Fractions 42/81,749/12,770/479 is 7/155196
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 81,12,479 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(81,12,479) = 1
common factors(in case of two or more numbers have common factors) = 3
GCF(81,12,479) x common factors =1 x 3 = 3
LCM(81,12,479) = ( 81 × 12 × 479 ) / 3
LCM(81,12,479) = 465588 / 3
LCM(81,12,479) = 155196
Here are some samples of GCF of Fractions calculations.
1. What is the HCF of 42,749,770?
The HCF of 42,749,770 is 7
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 42/81, 749/12, 770/479?
Answer: GCF of Numerators as per given numbers 42/81, 749/12, 770/479 is
GCF of Numerators i.e. for 42,749,770 is 7
LCM of denominators i.e. for 81,12,479 is 155196.
Thus, GCF of Fractions is 7/155196.Finally, GCF of Fractions for 42/81, 749/12, 770/479 is 7/155196.