GCF of 720/21, 747/615
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 720/21, 747/615 i.e 9/4305 easily. The following is the detailed procedure to determine the greatest common factor of fractions 720/21, 747/615.
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 720/21,747/615?
Given fractions are 720/21,747/615
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 720/21,747/615, numerators are 720,747
Denominators are 21,615
The GCF of 720,747 is 9 .
LCM of 21,615 is 4305.
The greatest common factor of 720/21,747/615 = [GCF of 720,747]/[LCM of 21,615]= 9/4305
Therefore, the GCF of 720/21,747/615 is 9/4305.
To find the highest common factor of 720,747, we have to find the factors of both numbers and list the highest common factor.
The factors of 720 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
The factors of 747 are 1, 3, 9, 83, 249, 747
The HCF of 720,747 is 9.
Lets's calculate GCF of 720,747
| 3 | 720, 747 |
| 3 | 240, 249 |
| 80, 83 |
∴ So the GCF of the given numbers is 3 x 3 = 9
Greatest Common Factor of 720,747 By Matching Biggest Common Factor Method
Now, list down the factors of 720
:1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,30,36,40,45,48,60,72,80,90,120,144,180,240,360,720
Now, list down the factors of 747
:1,3,9,83,249,747
Greatest Common Factor
We found the factors 720,747 . The biggest common factor number is the GCF number.
So the greatest common factor 720,747 is 9.
Lets's calculate LCM of 21,615
| 3 | 21, 615 |
| 7, 205 |
∴ So the LCM of the given numbers is 3 x 7 x 205 = 4305
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 9/4305
Therefore, the GCF of Fractions 720/21,747/615 is 9/4305
Least Common Multiple of 21,615 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 21,615 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(21,615) = 3
common factors(in case of two or more numbers have common factors) = 1
GCF(21,615) x common factors =3 x 1 = 3
LCM(21,615) = ( 21 × 615 ) / 3
LCM(21,615) = 12915 / 3
LCM(21,615) = 4305
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FAQs on GCF of Fractions of 720/21, 747/615
1. What is the HCF of 720,747?
The HCF of 720,747 is 9
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 720/21, 747/615?
Answer: GCF of Numerators as per given numbers 720/21, 747/615 is
GCF of Numerators i.e. for 720,747 is 9
LCM of denominators i.e. for 21,615 is 4305.
Thus, GCF of Fractions is 9/4305.Finally, GCF of Fractions for 720/21, 747/615 is 9/4305.