GCF of 20/18, 412/18, 780/530
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 20/18, 412/18, 780/530 i.e 4/4770 easily. The following is the detailed procedure to determine the greatest common factor of fractions 20/18, 412/18, 780/530.
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 20/18,412/18,780/530?
Given fractions are 20/18,412/18,780/530
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 20/18,412/18,780/530, numerators are 20,412,780
Denominators are 18,18,530
The GCF of 20,412,780 is 4 .
LCM of 18,18,530 is 4770.
The greatest common factor of 20/18,412/18,780/530 = [GCF of 20,412,780]/[LCM of 18,18,530]= 4/4770
Therefore, the GCF of 20/18,412/18,780/530 is 4/4770.
To find the highest common factor of 20,412,780, we have to find the factors of both numbers and list the highest common factor.
The factors of 20 are 1, 2, 4, 5, 10, 20
The factors of 412 are 1, 2, 4, 103, 206, 412
The factors of 780 are 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
The HCF of 20,412,780 is 4.
Lets's calculate GCF of 20,412,780
| 2 | 20, 412, 780 |
| 2 | 10, 206, 390 |
| 5, 103, 195 |
∴ So the GCF of the given numbers is 2 x 2 = 4
Greatest Common Factor of 20,412,780 By Matching Biggest Common Factor Method
Now, list down the factors of 20
:1,2,4,5,10,20
Now, list down the factors of 412
:1,2,4,103,206,412
Now, list down the factors of 780
:1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780
Greatest Common Factor
We found the factors 20,412,780 . The biggest common factor number is the GCF number.
So the greatest common factor 20,412,780 is 4.
Lets's calculate LCM of 18,18,530
| 2 | 18, 18, 530 |
| 3 | 9, 9, 265 |
| 3 | 3, 3, 265 |
| 1, 1, 265 |
∴ So the LCM of the given numbers is 2 x 3 x 3 x 1 x 1 x 265 = 4770
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 4/4770
Therefore, the GCF of Fractions 20/18,412/18,780/530 is 4/4770
Least Common Multiple of 18,18,530 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 18,18,530 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(18,18,530) = 2
common factors(in case of two or more numbers have common factors) = 18
GCF(18,18,530) x common factors =2 x 18 = 36
LCM(18,18,530) = ( 18 × 18 × 530 ) / 36
LCM(18,18,530) = 171720 / 36
LCM(18,18,530) = 4770
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FAQs on GCF of Fractions of 20/18, 412/18, 780/530
1. What is the HCF of 20,412,780?
The HCF of 20,412,780 is 4
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 20/18, 412/18, 780/530?
Answer: GCF of Numerators as per given numbers 20/18, 412/18, 780/530 is
GCF of Numerators i.e. for 20,412,780 is 4
LCM of denominators i.e. for 18,18,530 is 4770.
Thus, GCF of Fractions is 4/4770.Finally, GCF of Fractions for 20/18, 412/18, 780/530 is 4/4770.