The given expression is:

$-5 + 3 - 5 + 3 - 5 + 3$

Step-by-step solution:

1. Group terms with the same sign: $(-5 - 5 - 5) + (3 + 3 + 3)$

2. Simplify each group: $-15 + 9$

3. Add the results: $-15 + 9 = -6$

Final Answer:

$-6$

Would you like further clarification or detailed explanation?

Related Questions:

1. How do grouping and simplification work in expressions like this?
2. What is the associative property of addition?
3. How do negative and positive numbers interact in addition and subtraction?
4. Can this problem be solved using a number line for better understanding?
5. What are other real-world applications of such expressions?

Tip:

When working with alternating positive and negative numbers, grouping terms simplifies calculations and reduces errors.