To solve the expression \(-15 + 5 - 6 + 20\), we can follow these steps:

1. Start by combining the positive and negative numbers separately:

\[
-15 + 5 - 6 + 20
\]

2. Combine the negative numbers:

\[
-15 - 6 = -21
\]

3. Combine the positive numbers:

\[
5 + 20 = 25
\]

4. Now, combine the results from steps 2 and 3:

\[
25 - 21 = 4
\]

Therefore, the value of the expression is:

\[
\boxed{4}
\]

Would you like more details or have any questions?

Here are some related questions:

1. How do you handle addition and subtraction of negative numbers?
2. What is the commutative property of addition?
3. How can breaking down complex expressions into smaller parts simplify solving them?
4. What are the steps to follow when simplifying arithmetic expressions?
5. How do you ensure the accuracy of your calculations in multi-step problems?
6. What role does the order of operations play in simplifying expressions?
7. How can visual aids, like number lines, help in understanding integer operations?
8. What are some techniques for quickly combining large numbers?

**Tip:** Always double-check your work by re-evaluating the expression or using a different method to ensure accuracy.

Learn how to solve the arithmetic expression -15 + 5 - 6 + 20 step-by-step. This problem involves arithmetic operations with negative and positive integers, suitable for students in Grades 5-8.

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