The expression you provided is:

$a + (b - c)$

This represents adding $a$ to the result of the subtraction of $c$ from $b$. It simplifies based on the values assigned to $a$, $b$, and $c$. In general, it can be left in this form unless further information is given.

If you'd like more detail or a specific calculation, feel free to provide values for $a$, $b$, and $c$.

Here are 5 related questions:

1. What happens if $a = 0$ or $c = 0$ in the expression $a + (b - c)$?
2. How does the expression change if you swap $b$ and $c$?
3. Can this expression be rewritten using the distributive property?
4. What is the result if all variables are equal to 1?
5. How can this expression be used in solving linear equations?

Tip: When simplifying expressions with parentheses, always evaluate the inside of the parentheses first following the order of operations (PEMDAS).