GCF of 34/21, 20/98, 68/42, 70/998
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 34/21, 20/98, 68/42, 70/998 i.e 2/146706 easily. The following is the detailed procedure to determine the greatest common factor of fractions 34/21, 20/98, 68/42, 70/998.
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 34/21,20/98,68/42,70/998?
Given fractions are 34/21,20/98,68/42,70/998
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 34/21,20/98,68/42,70/998, numerators are 34,20,68,70
Denominators are 21,98,42,998
The GCF of 34,20,68,70 is 2 .
LCM of 21,98,42,998 is 146706.
The greatest common factor of 34/21,20/98,68/42,70/998 = [GCF of 34,20,68,70]/[LCM of 21,98,42,998]= 2/146706
Therefore, the GCF of 34/21,20/98,68/42,70/998 is 2/146706.
To find the highest common factor of 34,20,68,70, we have to find the factors of both numbers and list the highest common factor.
The factors of 34 are 1, 2, 17, 34
The factors of 20 are 1, 2, 4, 5, 10, 20
The factors of 68 are 1, 2, 4, 17, 34, 68
The factors of 70 are 1, 2, 5, 7, 10, 14, 35, 70
The HCF of 34,20,68,70 is 2.
Lets's calculate GCF of 34,20,68,70
| 2 | 34, 20, 68, 70 |
| 17, 10, 34, 35 |
∴ So the GCF of the given numbers is 2 = 2
Greatest Common Factor of 34,20,68,70 By Matching Biggest Common Factor Method
Now, list down the factors of 34
:1,2,17,34
Now, list down the factors of 20
:1,2,4,5,10,20
Now, list down the factors of 68
:1,2,4,17,34,68
Now, list down the factors of 70
:1,2,5,7,10,14,35,70
Greatest Common Factor
We found the factors 34,20,68,70 . The biggest common factor number is the GCF number.
So the greatest common factor 34,20,68,70 is 2.
Lets's calculate LCM of 21,98,42,998
| 2 | 21, 98, 42, 998 |
| 3 | 21, 49, 21, 499 |
| 7 | 7, 49, 7, 499 |
| 1, 1, 7, 499 |
∴ So the LCM of the given numbers is 2 x 3 x 7 x 1 x 1 x 7 x 499 = 146706
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 2/146706
Therefore, the GCF of Fractions 34/21,20/98,68/42,70/998 is 2/146706
Least Common Multiple of 21,98,42,998 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 21,98,42,998 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(21,98,42,998) = 1
common factors(in case of two or more numbers have common factors) = 588
GCF(21,98,42,998) x common factors =1 x 588 = 588
LCM(21,98,42,998) = ( 21 × 98 × 42 × 998 ) / 588
LCM(21,98,42,998) = 86263128 / 588
LCM(21,98,42,998) = 146706
GCF of Fractions Calculation Examples
Here are some samples of GCF of Fractions calculations.
FAQs on GCF of Fractions of 34/21, 20/98, 68/42, 70/998
1. What is the HCF of 34,20,68,70?
The HCF of 34,20,68,70 is 2
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 34/21, 20/98, 68/42, 70/998?
Answer: GCF of Numerators as per given numbers 34/21, 20/98, 68/42, 70/998 is
GCF of Numerators i.e. for 34,20,68,70 is 2
LCM of denominators i.e. for 21,98,42,998 is 146706.
Thus, GCF of Fractions is 2/146706.Finally, GCF of Fractions for 34/21, 20/98, 68/42, 70/998 is 2/146706.