https://file.aiquickdraw.com/mathbot/file/1726022144186um5se22q.jpg

Let's evaluate each expression step by step:

1. **First expression:**
   \[
   -5 \times (-2.4)
   \]
   Multiplying two negative numbers results in a positive number:
   \[
   -5 \times (-2.4) = 12
   \]

2. **Second expression:**
   \[
   -7.4 \div 10
   \]
   Dividing a negative number by a positive number results in a negative number:
   \[
   -7.4 \div 10 = -0.74
   \]

3. **Third expression:**
   \[
   \frac{-4}{7} \div (-2)
   \]
   Dividing two negative numbers results in a positive result. First, rewrite the division as multiplication by the reciprocal:
   \[
   \frac{-4}{7} \times \frac{-1}{2} = \frac{4}{14} = \frac{2}{7}
   \]

4. **Fourth expression:**
   \[
   4 \times \left(-\frac{3}{8}\right)
   \]
   Multiplying a positive number by a negative fraction results in a negative value:
   \[
   4 \times \left(-\frac{3}{8}\right) = -\frac{12}{8} = -1.5
   \]

The final results for each expression are:
1. \( 12 \)
2. \( -0.74 \)
3. \( \frac{2}{7} \)
4. \( -1.5 \)

Would you like any more details on these steps, or do you have any questions?

Here are 5 related questions:
1. What happens when you multiply a positive number by a negative number?
2. How do you divide fractions, and why is the reciprocal used?
3. What is the result of dividing a number by 10?
4. Why does the product of two negative numbers result in a positive number?
5. Can you convert a decimal into a fraction?

**Tip:** When dividing fractions, always remember to multiply by the reciprocal of the divisor.

Evaluate the following expressions: -5 × (-2.4), -7.4 ÷ 10, (-4/7) ÷ (-2), 4 × (-3/8).

Solve expressions involving multiplication and division of negative numbers and fractions. This problem reviews core mathematical operations and is ideal for Grades 6-8.

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