Question

$divide \: = \frac{15a}{3}$

Answer 1

Heya !!!

we know that 15 is divisible by 3

we should divide 15 by 3 as usually.

After dividing 15a/3..we get 5a

# Hope this helps #

Answer 2

Hey friend,  Harish here.

Here is your answer:

$\frac{15a}{3} = \frac{15}{3} \times a$

We know  that, 

$\frac{15}{3} = 5$

So,  
 $\frac{15}{3}\times a = 5\times a = 5a$

Therefore the answer is 5a.
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Hope my answer is helpful to you.