GCF of 780/21, 130/155
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 780/21, 130/155 i.e 130/3255 easily. The following is the detailed procedure to determine the greatest common factor of fractions 780/21, 130/155.
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 780/21,130/155?
Given fractions are 780/21,130/155
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 780/21,130/155, numerators are 780,130
Denominators are 21,155
The GCF of 780,130 is 130 .
LCM of 21,155 is 3255.
The greatest common factor of 780/21,130/155 = [GCF of 780,130]/[LCM of 21,155]= 130/3255
Therefore, the GCF of 780/21,130/155 is 130/3255.
To find the highest common factor of 780,130, we have to find the factors of both numbers and list the highest common factor.
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 factors of 130 are 1, 2, 5, 10, 13, 26, 65, 130
The HCF of 780,130 is 130.
Lets's calculate GCF of 780,130
| 2 | 780, 130 |
| 5 | 390, 65 |
| 13 | 78, 13 |
| 6, 1 |
∴ So the GCF of the given numbers is 2 x 5 x 13 = 130
Greatest Common Factor of 780,130 By Matching Biggest Common Factor Method
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
Now, list down the factors of 130
:1,2,5,10,13,26,65,130
Greatest Common Factor
We found the factors 780,130 . The biggest common factor number is the GCF number.
So the greatest common factor 780,130 is 130.
Lets's calculate LCM of 21,155
Given numbers has no common factors except 1. So, there LCM is their product i.e 3255
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 130/3255
Therefore, the GCF of Fractions 780/21,130/155 is 130/3255
Least Common Multiple of 21,155 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 21,155 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(21,155) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(21,155) x common factors =1 x 1 = 1
LCM(21,155) = ( 21 × 155 ) / 1
LCM(21,155) = 3255 / 1
LCM(21,155) = 3255
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FAQs on GCF of Fractions of 780/21, 130/155
1. What is the HCF of 780,130?
The HCF of 780,130 is 130
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 780/21, 130/155?
Answer: GCF of Numerators as per given numbers 780/21, 130/155 is
GCF of Numerators i.e. for 780,130 is 130
LCM of denominators i.e. for 21,155 is 3255.
Thus, GCF of Fractions is 130/3255.Finally, GCF of Fractions for 780/21, 130/155 is 130/3255.