GCF of 660/638, 6980/430
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 660/638, 6980/430 i.e 20/137170 easily. The following is the detailed procedure to determine the greatest common factor of fractions 660/638, 6980/430.
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 660/638,6980/430?
Given fractions are 660/638,6980/430
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 660/638,6980/430, numerators are 660,6980
Denominators are 638,430
The GCF of 660,6980 is 20 .
LCM of 638,430 is 137170.
The greatest common factor of 660/638,6980/430 = [GCF of 660,6980]/[LCM of 638,430]= 20/137170
Therefore, the GCF of 660/638,6980/430 is 20/137170.
To find the highest common factor of 660,6980, we have to find the factors of both numbers and list the highest common factor.
The factors of 660 are 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660
The factors of 6980 are 1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980
The HCF of 660,6980 is 20.
Lets's calculate GCF of 660,6980
| 2 | 660, 6980 |
| 2 | 330, 3490 |
| 5 | 165, 1745 |
| 33, 349 |
∴ So the GCF of the given numbers is 2 x 2 x 5 = 20
Greatest Common Factor of 660,6980 By Matching Biggest Common Factor Method
Now, list down the factors of 660
:1,2,3,4,5,6,10,11,12,15,20,22,30,33,44,55,60,66,110,132,165,220,330,660
Now, list down the factors of 6980
:1,2,4,5,10,20,349,698,1396,1745,3490,6980
Greatest Common Factor
We found the factors 660,6980 . The biggest common factor number is the GCF number.
So the greatest common factor 660,6980 is 20.
Lets's calculate LCM of 638,430
| 2 | 638, 430 |
| 319, 215 |
∴ So the LCM of the given numbers is 2 x 319 x 215 = 137170
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 20/137170
Therefore, the GCF of Fractions 660/638,6980/430 is 20/137170
Least Common Multiple of 638,430 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 638,430 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(638,430) = 2
common factors(in case of two or more numbers have common factors) = 1
GCF(638,430) x common factors =2 x 1 = 2
LCM(638,430) = ( 638 × 430 ) / 2
LCM(638,430) = 274340 / 2
LCM(638,430) = 137170
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FAQs on GCF of Fractions of 660/638, 6980/430
1. What is the HCF of 660,6980?
The HCF of 660,6980 is 20
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 660/638, 6980/430?
Answer: GCF of Numerators as per given numbers 660/638, 6980/430 is
GCF of Numerators i.e. for 660,6980 is 20
LCM of denominators i.e. for 638,430 is 137170.
Thus, GCF of Fractions is 20/137170.Finally, GCF of Fractions for 660/638, 6980/430 is 20/137170.