The calculation is as follows:

$-3 + 9 - 4 = 2$

Final Answer: 2

Would you like further clarification on this, or do you have additional questions? Here are some related problems you might explore:

1. What is the result of $-5 + 7 - 3$?
2. How do parentheses affect the order of operations in expressions like $(-3 + 9) - 4$?
3. Can you solve $3x - 4 = 2$ for $x$?
4. What is the absolute value of $-3 + 9 - 4$?
5. How does changing one term affect the outcome of an arithmetic sequence like this?

Tip: Always follow the order of operations (PEMDAS/BODMAS) when solving more complex problems!