Let's take a closer look at the image you uploaded. The visible problems involve fractions and basic arithmetic. I'll help you solve some of them:

Problem 9:

The expression seems to involve: $\frac{-9.4}{2.7} = \frac{-1269}{2519} \quad \text{and} \quad -9.4 \times 2.7 = -25.38$ This indicates a division and multiplication between a decimal and a fraction. However, I need clarification for the exact expression written down. If you'd like me to proceed with a detailed solution, please confirm.

Problem 10:

The expression is: $\frac{15}{8} \times 4 = \frac{60}{24} \quad \text{and} \quad \frac{-7}{18} + \frac{3}{4} = -\frac{1}{2}$ Here, two operations are performed:

1. Multiplication of fractions: $\frac{15}{8} \times 4 = \frac{60}{24}$ Simplifying, $\frac{60}{24} = 2.5$.

2. Addition of fractions: $\frac{-7}{18} + \frac{3}{4}$ The least common denominator (LCD) between 18 and 4 is 36: $\frac{-7}{18} = \frac{-14}{36}, \quad \frac{3}{4} = \frac{27}{36}$ Adding these: $\frac{-14}{36} + \frac{27}{36} = \frac{13}{36}$ Therefore, this doesn't quite lead to $-\frac{1}{2}$, so there might be some error or adjustment needed here.

Would you like a detailed breakdown of any specific part, or should we work through another problem together? Feel free to ask for clarifications.

Follow-up questions:

1. How can we simplify the result of $\frac{-9.4}{2.7}$ in fractional form?
2. What are the steps to convert mixed fractions into improper fractions for easier calculations?
3. How can we double-check our fraction operations using decimal conversions?
4. What happens when fractions have unlike denominators and how can we find a common one?
5. How would changing the signs of the fractions affect the result of the addition?

Tip: When adding or subtracting fractions, always ensure the denominators are the same before performing operations on the numerators.