Answer:
Option D - (15+24a)x
Explanation:
We have given that : Expression = 15x+24ax
We have to write: The equivalent form of the given expression.
We can apply the distributive property of the real number which is
c(a+b)=ca+cb
In the given expression, we take x common and form distributive property
15x+24ax = x(15+24a)
Therefore, option D is correct