GCF of 27/57, 84/42, 90/36
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 27/57, 84/42, 90/36 i.e 3/4788 easily. The following is the detailed procedure to determine the greatest common factor of fractions 27/57, 84/42, 90/36.
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 27/57,84/42,90/36?
Given fractions are 27/57,84/42,90/36
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 27/57,84/42,90/36, numerators are 27,84,90
Denominators are 57,42,36
The GCF of 27,84,90 is 3 .
LCM of 57,42,36 is 4788.
The greatest common factor of 27/57,84/42,90/36 = [GCF of 27,84,90]/[LCM of 57,42,36]= 3/4788
Therefore, the GCF of 27/57,84/42,90/36 is 3/4788.
To find the highest common factor of 27,84,90, we have to find the factors of both numbers and list the highest common factor.
The factors of 27 are 1, 3, 9, 27
The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
The HCF of 27,84,90 is 3.
Lets's calculate GCF of 27,84,90
| 3 | 27, 84, 90 |
| 9, 28, 30 |
∴ So the GCF of the given numbers is 3 = 3
Greatest Common Factor of 27,84,90 By Matching Biggest Common Factor Method
Now, list down the factors of 27
:1,3,9,27
Now, list down the factors of 84
:1,2,3,4,6,7,12,14,21,28,42,84
Now, list down the factors of 90
:1,2,3,5,6,9,10,15,18,30,45,90
Greatest Common Factor
We found the factors 27,84,90 . The biggest common factor number is the GCF number.
So the greatest common factor 27,84,90 is 3.
Lets's calculate LCM of 57,42,36
| 2 | 57, 42, 36 |
| 3 | 57, 21, 18 |
| 19, 7, 6 |
∴ So the LCM of the given numbers is 2 x 3 x 19 x 7 x 6 = 4788
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 3/4788
Therefore, the GCF of Fractions 27/57,84/42,90/36 is 3/4788
Least Common Multiple of 57,42,36 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 57,42,36 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(57,42,36) = 3
common factors(in case of two or more numbers have common factors) = 6
GCF(57,42,36) x common factors =3 x 6 = 18
LCM(57,42,36) = ( 57 × 42 × 36 ) / 18
LCM(57,42,36) = 86184 / 18
LCM(57,42,36) = 4788
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FAQs on GCF of Fractions of 27/57, 84/42, 90/36
1. What is the HCF of 27,84,90?
The HCF of 27,84,90 is 3
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 27/57, 84/42, 90/36?
Answer: GCF of Numerators as per given numbers 27/57, 84/42, 90/36 is
GCF of Numerators i.e. for 27,84,90 is 3
LCM of denominators i.e. for 57,42,36 is 4788.
Thus, GCF of Fractions is 3/4788.Finally, GCF of Fractions for 27/57, 84/42, 90/36 is 3/4788.