Let's simplify the expression step by step:

\[
-25 + 21 + (-4) + 25
\]

1. Combine the positive and negative terms:

\[
(-25 + 25) + (21 - 4)
\]

2. Simplify each part:

\[
0 + 17
\]

3. The final answer is:

\[
17
\]

Would you like more details or have any questions? Here are some related questions for further practice:

1. Simplify \( 18 + (-7) + (-12) + 4 \).
2. What is the result of \( -30 + 15 + 10 + (-5) \)?
3. Combine the numbers \( -50 + 50 + (-20) + 30 \).
4. How do you simplify \( -14 + 6 + (-3) + 11 \)?
5. What is the sum of \( -10 + 8 + (-7) + 15 \)?

**Tip:** When simplifying expressions, always group like terms and perform operations with positives and negatives carefully to avoid mistakes.

Learn how to simplify the expression -25 + 21 + (-4) + 25 step-by-step. This problem involves basic arithmetic and integer operations, focusing on combining positive and negative integers to find the final result. Suitable for students in Grades 6-8.

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