Question

LCM of 7/15 and 3/25​

Answer 1

Answer:

LCM is  $\frac{21}{5}$

Step-by-step explanation:

First we find LCM of 15 and 25

LCM of 15 and 25 is 75

Now

we multiply both numerator and denominator of the first fraction by 5

$\frac{7*5}{15*5}=\frac{35}{75}$

we multiply both numerator and denominator of the second fraction by 3

$\frac{3*3}{25*3}=\frac{9}{75}$

Next we find LCM of 35 and 9

LCM of 35 and 9 is 315

LCM of the given two fractions is

$\frac{315}{75}$

$=\frac{63}{15}$

$=\frac{21}{5}$

$\therefore\,\boxed{\bf\,LCM\,is\,\frac{21}{5}}$

Answer 2

Answer:

21/5

Step-by-step explanation:

Given LCM of 7/15 and 3/25

 We know that LCM of a fraction is  

LCM of numerator / hcf of denominator

So LCM of 7 and 3 will be 7 x 3 = 21

So LCM = 21 and

HCF of 15 and 25 will be

For 15 factors are 3, 5

For 25 factors are 5, 5

HCF will be 5

Now LCM of a fraction is 21 / 5