Let's break down the expression step by step:

$A = -3 - 5 + 23 + 234 - 75 + 267$

First, add and subtract the numbers in sequence:

$-3 - 5 = -8$ $-8 + 23 = 15$ $15 + 234 = 249$ $249 - 75 = 174$ $174 + 267 = 441$

So, the value of $A$ is:

$A = 441$

Would you like further explanation or details on this calculation?

Here are some related questions:

1. How do you simplify expressions with both addition and subtraction?
2. What is the order of operations, and how does it affect calculations?
3. How can you use a calculator to check such expressions efficiently?
4. What happens when you have negative numbers in an expression?
5. Can this approach be applied to more complex algebraic expressions?

Tip: Always handle addition and subtraction from left to right, as they are on the same level of the order of operations!