This expression can't be simplified.
Work/Explanation:
The given expression,
, cannot be simplified further because 8 and -3x are not like terms. 8 is a constant and -3x is a term that contains a variable. We cannot add constants and variables. Moreover, the given expression can't be factored because 8 - 3x have no common factors except 1.
So this is the answer in its simplest form.