GCF of 561/781, 1656/221
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 561/781, 1656/221 i.e 3/172601 easily. The following is the detailed procedure to determine the greatest common factor of fractions 561/781, 1656/221.
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 561/781,1656/221?
Given fractions are 561/781,1656/221
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 561/781,1656/221, numerators are 561,1656
Denominators are 781,221
The GCF of 561,1656 is 3 .
LCM of 781,221 is 172601.
The greatest common factor of 561/781,1656/221 = [GCF of 561,1656]/[LCM of 781,221]= 3/172601
Therefore, the GCF of 561/781,1656/221 is 3/172601.
To find the highest common factor of 561,1656, we have to find the factors of both numbers and list the highest common factor.
The factors of 561 are 1, 3, 11, 17, 33, 51, 187, 561
The factors of 1656 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 36, 46, 69, 72, 92, 138, 184, 207, 276, 414, 552, 828, 1656
The HCF of 561,1656 is 3.
Lets's calculate GCF of 561,1656
| 3 | 561, 1656 |
| 187, 552 |
∴ So the GCF of the given numbers is 3 = 3
Greatest Common Factor of 561,1656 By Matching Biggest Common Factor Method
Now, list down the factors of 561
:1,3,11,17,33,51,187,561
Now, list down the factors of 1656
:1,2,3,4,6,8,9,12,18,23,24,36,46,69,72,92,138,184,207,276,414,552,828,1656
Greatest Common Factor
We found the factors 561,1656 . The biggest common factor number is the GCF number.
So the greatest common factor 561,1656 is 3.
Lets's calculate LCM of 781,221
Given numbers has no common factors except 1. So, there LCM is their product i.e 172601
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 3/172601
Therefore, the GCF of Fractions 561/781,1656/221 is 3/172601
Least Common Multiple of 781,221 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 781,221 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(781,221) = 1
common factors(in case of two or more numbers have common factors) = 1
GCF(781,221) x common factors =1 x 1 = 1
LCM(781,221) = ( 781 × 221 ) / 1
LCM(781,221) = 172601 / 1
LCM(781,221) = 172601
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FAQs on GCF of Fractions of 561/781, 1656/221
1. What is the HCF of 561,1656?
The HCF of 561,1656 is 3
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 561/781, 1656/221?
Answer: GCF of Numerators as per given numbers 561/781, 1656/221 is
GCF of Numerators i.e. for 561,1656 is 3
LCM of denominators i.e. for 781,221 is 172601.
Thus, GCF of Fractions is 3/172601.Finally, GCF of Fractions for 561/781, 1656/221 is 3/172601.