GCF of 688/161, 660/140
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 688/161, 660/140 i.e 4/3220 easily. The following is the detailed procedure to determine the greatest common factor of fractions 688/161, 660/140.
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 688/161,660/140?
Given fractions are 688/161,660/140
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 688/161,660/140, numerators are 688,660
Denominators are 161,140
The GCF of 688,660 is 4 .
LCM of 161,140 is 3220.
The greatest common factor of 688/161,660/140 = [GCF of 688,660]/[LCM of 161,140]= 4/3220
Therefore, the GCF of 688/161,660/140 is 4/3220.
To find the highest common factor of 688,660, we have to find the factors of both numbers and list the highest common factor.
The factors of 688 are 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
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 HCF of 688,660 is 4.
Lets's calculate GCF of 688,660
| 2 | 688, 660 |
| 2 | 344, 330 |
| 172, 165 |
∴ So the GCF of the given numbers is 2 x 2 = 4
Greatest Common Factor of 688,660 By Matching Biggest Common Factor Method
Now, list down the factors of 688
:1,2,4,8,16,43,86,172,344,688
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
Greatest Common Factor
We found the factors 688,660 . The biggest common factor number is the GCF number.
So the greatest common factor 688,660 is 4.
Lets's calculate LCM of 161,140
| 7 | 161, 140 |
| 23, 20 |
∴ So the LCM of the given numbers is 7 x 23 x 20 = 3220
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 4/3220
Therefore, the GCF of Fractions 688/161,660/140 is 4/3220
Least Common Multiple of 161,140 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 161,140 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(161,140) = 7
common factors(in case of two or more numbers have common factors) = 1
GCF(161,140) x common factors =7 x 1 = 7
LCM(161,140) = ( 161 × 140 ) / 7
LCM(161,140) = 22540 / 7
LCM(161,140) = 3220
GCF of Fractions Calculation Examples
Here are some samples of GCF of Fractions calculations.
FAQs on GCF of Fractions of 688/161, 660/140
1. What is the HCF of 688,660?
The HCF of 688,660 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 688/161, 660/140?
Answer: GCF of Numerators as per given numbers 688/161, 660/140 is
GCF of Numerators i.e. for 688,660 is 4
LCM of denominators i.e. for 161,140 is 3220.
Thus, GCF of Fractions is 4/3220.Finally, GCF of Fractions for 688/161, 660/140 is 4/3220.