To simplify the expression $(3x - 8) + (2x + 5) - (4x - 8)$, we follow these steps:

1. Distribute the minus sign across the third group, $-(4x - 8)$. This will change the signs of each term inside the parentheses.

   $(3x - 8) + (2x + 5) - 4x + 8$

2. Combine like terms:

   • Combine the $x$-terms: $3x + 2x - 4x = x$
   • Combine the constant terms: $-8 + 5 + 8 = 5$

So, the simplified expression is:

$x + 5$

Would you like further clarification or have any additional questions?

Related Questions:

1. How do you handle terms with different powers of $x$ in similar expressions?
2. What happens when you have more than one negative sign in an expression?
3. Can you simplify an expression involving fractions in a similar way?
4. How can you factor the expression $x + 5$?
5. What are the common mistakes to avoid when combining like terms?

Tip: Always remember to distribute the negative signs carefully when subtracting terms.