Let's solve the expression step by step:

\[
(-9)(4) + (5)(10)
\]

1. Multiply \(-9\) by \(4\):

\[
-9 \times 4 = -36
\]

2. Multiply \(5\) by \(10\):

\[
5 \times 10 = 50
\]

3. Add the two results:

\[
-36 + 50 = 14
\]

So, the solution to the expression is:

\[
14
\]

Would you like more details or have any questions?

Here are 5 related questions for further practice:
1. **(-6)(7) + (8)(-3) = ?**
2. **(-12)(5) + (9)(4) = ?**
3. **(7)(-5) + (3)(6) = ?**
4. **(-4)(3) - (2)(8) = ?**
5. **(-10)(2) + (-4)(7) = ?**

**Tip:** Always perform multiplication first before addition or subtraction when solving mixed operations.

Learn how to solve the mathematical expression (-9)(4) + (5)(10) using the order of operations. This problem covers integer multiplication and addition, with a detailed step-by-step solution suitable for students in Grades 6-8.

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