GCF of 43/48, 27/72, 81/70, 28/21
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 43/48, 27/72, 81/70, 28/21 i.e 1/5040 easily. The following is the detailed procedure to determine the greatest common factor of fractions 43/48, 27/72, 81/70, 28/21.
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 43/48,27/72,81/70,28/21?
Given fractions are 43/48,27/72,81/70,28/21
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 43/48,27/72,81/70,28/21, numerators are 43,27,81,28
Denominators are 48,72,70,21
The GCF of 43,27,81,28 is 1 .
LCM of 48,72,70,21 is 5040.
The greatest common factor of 43/48,27/72,81/70,28/21 = [GCF of 43,27,81,28]/[LCM of 48,72,70,21]= 1/5040
Therefore, the GCF of 43/48,27/72,81/70,28/21 is 1/5040.
To find the highest common factor of 43,27,81,28, we have to find the factors of both numbers and list the highest common factor.
The factors of 43 are 1, 43
The factors of 27 are 1, 3, 9, 27
The factors of 81 are 1, 3, 9, 27, 81
The factors of 28 are 1, 2, 4, 7, 14, 28
The HCF of 43,27,81,28 is 1.
Lets's calculate GCF of 43,27,81,28
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 43,27,81,28 By Matching Biggest Common Factor Method
Now, list down the factors of 43
:1,43
Now, list down the factors of 27
:1,3,9,27
Now, list down the factors of 81
:1,3,9,27,81
Now, list down the factors of 28
:1,2,4,7,14,28
Greatest Common Factor
We found the factors 43,27,81,28 . The biggest common factor number is the GCF number.
So the greatest common factor 43,27,81,28 is 1.
Lets's calculate LCM of 48,72,70,21
| 2 | 48, 72, 70, 21 |
| 2 | 24, 36, 35, 21 |
| 2 | 12, 18, 35, 21 |
| 3 | 6, 9, 35, 21 |
| 7 | 2, 3, 35, 7 |
| 2, 3, 5, 1 |
∴ So the LCM of the given numbers is 2 x 2 x 2 x 3 x 7 x 2 x 3 x 5 x 1 = 5040
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/5040
Therefore, the GCF of Fractions 43/48,27/72,81/70,28/21 is 1/5040
Least Common Multiple of 48,72,70,21 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 48,72,70,21 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(48,72,70,21) = 1
common factors(in case of two or more numbers have common factors) = 1008
GCF(48,72,70,21) x common factors =1 x 1008 = 1008
LCM(48,72,70,21) = ( 48 × 72 × 70 × 21 ) / 1008
LCM(48,72,70,21) = 5080320 / 1008
LCM(48,72,70,21) = 5040
GCF of Fractions Calculation Examples
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FAQs on GCF of Fractions of 43/48, 27/72, 81/70, 28/21
1. What is the HCF of 43,27,81,28?
The HCF of 43,27,81,28 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 43/48, 27/72, 81/70, 28/21?
Answer: GCF of Numerators as per given numbers 43/48, 27/72, 81/70, 28/21 is
GCF of Numerators i.e. for 43,27,81,28 is 1
LCM of denominators i.e. for 48,72,70,21 is 5040.
Thus, GCF of Fractions is 1/5040.Finally, GCF of Fractions for 43/48, 27/72, 81/70, 28/21 is 1/5040.