GCF of 57/72, 381/38, 798/840
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 57/72, 381/38, 798/840 i.e 3/47880 easily. The following is the detailed procedure to determine the greatest common factor of fractions 57/72, 381/38, 798/840.
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 57/72,381/38,798/840?
Given fractions are 57/72,381/38,798/840
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 57/72,381/38,798/840, numerators are 57,381,798
Denominators are 72,38,840
The GCF of 57,381,798 is 3 .
LCM of 72,38,840 is 47880.
The greatest common factor of 57/72,381/38,798/840 = [GCF of 57,381,798]/[LCM of 72,38,840]= 3/47880
Therefore, the GCF of 57/72,381/38,798/840 is 3/47880.
To find the highest common factor of 57,381,798, we have to find the factors of both numbers and list the highest common factor.
The factors of 57 are 1, 3, 19, 57
The factors of 381 are 1, 3, 127, 381
The factors of 798 are 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
The HCF of 57,381,798 is 3.
Lets's calculate GCF of 57,381,798
| 3 | 57, 381, 798 |
| 19, 127, 266 |
∴ So the GCF of the given numbers is 3 = 3
Greatest Common Factor of 57,381,798 By Matching Biggest Common Factor Method
Now, list down the factors of 57
:1,3,19,57
Now, list down the factors of 381
:1,3,127,381
Now, list down the factors of 798
:1,2,3,6,7,14,19,21,38,42,57,114,133,266,399,798
Greatest Common Factor
We found the factors 57,381,798 . The biggest common factor number is the GCF number.
So the greatest common factor 57,381,798 is 3.
Lets's calculate LCM of 72,38,840
| 2 | 72, 38, 840 |
| 2 | 36, 19, 420 |
| 2 | 18, 19, 210 |
| 3 | 9, 19, 105 |
| 3, 19, 35 |
∴ So the LCM of the given numbers is 2 x 2 x 2 x 3 x 3 x 19 x 35 = 47880
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 3/47880
Therefore, the GCF of Fractions 57/72,381/38,798/840 is 3/47880
Least Common Multiple of 72,38,840 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 72,38,840 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(72,38,840) = 2
common factors(in case of two or more numbers have common factors) = 24
GCF(72,38,840) x common factors =2 x 24 = 48
LCM(72,38,840) = ( 72 × 38 × 840 ) / 48
LCM(72,38,840) = 2298240 / 48
LCM(72,38,840) = 47880
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FAQs on GCF of Fractions of 57/72, 381/38, 798/840
1. What is the HCF of 57,381,798?
The HCF of 57,381,798 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 57/72, 381/38, 798/840?
Answer: GCF of Numerators as per given numbers 57/72, 381/38, 798/840 is
GCF of Numerators i.e. for 57,381,798 is 3
LCM of denominators i.e. for 72,38,840 is 47880.
Thus, GCF of Fractions is 3/47880.Finally, GCF of Fractions for 57/72, 381/38, 798/840 is 3/47880.