Explanation:
First let's simplify the upper part which is without x/8a
3a/x multiply xa/x
3a xa
__ x __
x x
x the denominator of 3a is cancelled with the x from xa the numerator.
that leaves us with
3a × a
__
x
we get 3a squared divided by x =
3a^2
____
x
now since we're dividing it with x/8a
3a^2 x
____ ÷ _____
x 8a
we change the sign ÷ to x so we flip the x/8a
3a^2 8a
_____ x ____
x x
8x3 = 24
a^2 x a = a^3
x multiply x = x^2
the final answer
24a^3
_____
x^2