Let's simplify the given expression:

\[
B = (-9) + (10) - (+3) - (+7) + (-4)
\]

Step-by-step calculation:

1. \( -9 + 10 = 1 \)
2. \( 1 - 3 = -2 \)
3. \( -2 - 7 = -9 \)
4. \( -9 + (-4) = -13 \)

So, the value of \( B \) is:

\[
B = -13
\]

Would you like further details or have any questions? Here are some related problems to try:

1. \( B = (-5) + (12) - (+4) + (-3) + (-6) \)
2. \( C = (-15) + (20) - (+8) + (-5) + (-7) \)
3. Simplify \( D = (8) + (-3) - (+6) - (+1) + (4) \)
4. Evaluate \( E = (-10) + (5) - (-3) + (-8) - (+2) \)
5. Calculate \( F = (-7) + (14) - (+9) - (+5) + (2) \)

**Tip:** Always combine positive and negative terms carefully by treating subtraction as adding the negative!

Learn how to simplify the integer expression B = (-9) + (10) - (+3) - (+7) + (-4). This step-by-step solution covers key arithmetic concepts, focusing on addition and subtraction of integers, and is suitable for students in Grades 6-7.

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