Write an expression to represent: Nine minus the quotient of two and a number x.

9 - 2/x

Lets break it down:

I think "nine minus" is clear - it starts off with "9 - something".

Now, a quotient is the result of division. For example, the quotient of 10/5 is 2, or the quotient of 16/2 is 8. Since in the phrase "quotient of two and x" two comes first, we are diving 2 by x. This is the quotient (2/x).

So to add it all together:

9 - 2/x would be your expression.