GCF of 45/42, 76/80, 398/96
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 45/42, 76/80, 398/96 i.e 1/3360 easily. The following is the detailed procedure to determine the greatest common factor of fractions 45/42, 76/80, 398/96.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
What is the GCF of 45/42,76/80,398/96?
Given fractions are 45/42,76/80,398/96
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 45/42,76/80,398/96, numerators are 45,76,398
Denominators are 42,80,96
The GCF of 45,76,398 is 1 .
LCM of 42,80,96 is 3360.
The greatest common factor of 45/42,76/80,398/96 = [GCF of 45,76,398]/[LCM of 42,80,96]= 1/3360
Therefore, the GCF of 45/42,76/80,398/96 is 1/3360.
To find the highest common factor of 45,76,398, we have to find the factors of both numbers and list the highest common factor.
The factors of 45 are 1, 3, 5, 9, 15, 45
The factors of 76 are 1, 2, 4, 19, 38, 76
The factors of 398 are 1, 2, 199, 398
The HCF of 45,76,398 is 1.
Lets's calculate GCF of 45,76,398
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 45,76,398 By Matching Biggest Common Factor Method
Now, list down the factors of 45
:1,3,5,9,15,45
Now, list down the factors of 76
:1,2,4,19,38,76
Now, list down the factors of 398
:1,2,199,398
Greatest Common Factor
We found the factors 45,76,398 . The biggest common factor number is the GCF number.
So the greatest common factor 45,76,398 is 1.
Lets's calculate LCM of 42,80,96
| 2 | 42, 80, 96 |
| 2 | 21, 40, 48 |
| 2 | 21, 20, 24 |
| 2 | 21, 10, 12 |
| 3 | 21, 5, 6 |
| 7, 5, 2 |
∴ So the LCM of the given numbers is 2 x 2 x 2 x 2 x 3 x 7 x 5 x 2 = 3360
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/3360
Therefore, the GCF of Fractions 45/42,76/80,398/96 is 1/3360
Least Common Multiple of 42,80,96 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 42,80,96 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(42,80,96) = 2
common factors(in case of two or more numbers have common factors) = 48
GCF(42,80,96) x common factors =2 x 48 = 96
LCM(42,80,96) = ( 42 × 80 × 96 ) / 96
LCM(42,80,96) = 322560 / 96
LCM(42,80,96) = 3360
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FAQs on GCF of Fractions of 45/42, 76/80, 398/96
1. What is the HCF of 45,76,398?
The HCF of 45,76,398 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 45/42, 76/80, 398/96?
Answer: GCF of Numerators as per given numbers 45/42, 76/80, 398/96 is
GCF of Numerators i.e. for 45,76,398 is 1
LCM of denominators i.e. for 42,80,96 is 3360.
Thus, GCF of Fractions is 1/3360.Finally, GCF of Fractions for 45/42, 76/80, 398/96 is 1/3360.