What is the simplified form of the quantity of x plus 9, all over 5 − the quantity of x plus 5, all over 5?

Given the statement: the quantity of x plus 9, all over 5 − the quantity of x plus 5, all over 5.

The quantity of x plus 9, all over 5 means

and

The quantity of x plus 5, all over 5 means

Then; we have;

we can write this as ;

⇒

Combine like terms;

⇒

therefore the simplified form of  the quantity of x plus 9, all over 5 − the quantity of x plus 5, all over 5 is,

the answer on e2020 was d.