GCF of 385/842, 690/830
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 385/842, 690/830 i.e 5/349430 easily. The following is the detailed procedure to determine the greatest common factor of fractions 385/842, 690/830.
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 385/842,690/830?
Given fractions are 385/842,690/830
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 385/842,690/830, numerators are 385,690
Denominators are 842,830
The GCF of 385,690 is 5 .
LCM of 842,830 is 349430.
The greatest common factor of 385/842,690/830 = [GCF of 385,690]/[LCM of 842,830]= 5/349430
Therefore, the GCF of 385/842,690/830 is 5/349430.
To find the highest common factor of 385,690, we have to find the factors of both numbers and list the highest common factor.
The factors of 385 are 1, 5, 7, 11, 35, 55, 77, 385
The factors of 690 are 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
The HCF of 385,690 is 5.
Lets's calculate GCF of 385,690
| 5 | 385, 690 |
| 77, 138 |
∴ So the GCF of the given numbers is 5 = 5
Greatest Common Factor of 385,690 By Matching Biggest Common Factor Method
Now, list down the factors of 385
:1,5,7,11,35,55,77,385
Now, list down the factors of 690
:1,2,3,5,6,10,15,23,30,46,69,115,138,230,345,690
Greatest Common Factor
We found the factors 385,690 . The biggest common factor number is the GCF number.
So the greatest common factor 385,690 is 5.
Lets's calculate LCM of 842,830
| 2 | 842, 830 |
| 421, 415 |
∴ So the LCM of the given numbers is 2 x 421 x 415 = 349430
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 5/349430
Therefore, the GCF of Fractions 385/842,690/830 is 5/349430
Least Common Multiple of 842,830 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 842,830 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(842,830) = 2
common factors(in case of two or more numbers have common factors) = 1
GCF(842,830) x common factors =2 x 1 = 2
LCM(842,830) = ( 842 × 830 ) / 2
LCM(842,830) = 698860 / 2
LCM(842,830) = 349430
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FAQs on GCF of Fractions of 385/842, 690/830
1. What is the HCF of 385,690?
The HCF of 385,690 is 5
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 385/842, 690/830?
Answer: GCF of Numerators as per given numbers 385/842, 690/830 is
GCF of Numerators i.e. for 385,690 is 5
LCM of denominators i.e. for 842,830 is 349430.
Thus, GCF of Fractions is 5/349430.Finally, GCF of Fractions for 385/842, 690/830 is 5/349430.