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The image you uploaded contains three problems involving scientific notation. Let's solve each of them:

### Problem 8
\[ (9.5 \times 10^{11}) + (6.3 \times 10^9) \]

To add numbers in scientific notation:
1. Align the exponents:
   - \( 6.3 \times 10^9 = 0.063 \times 10^{11} \)
2. Add the coefficients:
   - \( 9.5 + 0.063 = 9.563 \)
3. Combine:
   - \( 9.563 \times 10^{11} \)

### Problem 9
\[ (1.03 \times 10^9) - (4.7 \times 10^7) \]

To subtract numbers in scientific notation:
1. Align the exponents:
   - \( 4.7 \times 10^7 = 0.047 \times 10^9 \)
2. Subtract the coefficients:
   - \( 1.03 - 0.047 = 0.983 \)
3. Combine:
   - \( 0.983 \times 10^9 \)

### Problem 10
\[ (1.357 \times 10^9) + 590,000 \]

To add a number in scientific notation to a standard number:
1. Convert the standard number to scientific notation:
   - \( 590,000 = 0.59 \times 10^6 = 0.00059 \times 10^9 \)
2. Add the coefficients:
   - \( 1.357 + 0.00059 = 1.35759 \)
3. Combine:
   - \( 1.35759 \times 10^9 \)

### Solutions
1. **Problem 8:** \( 9.563 \times 10^{11} \)
2. **Problem 9:** \( 0.983 \times 10^9 \)
3. **Problem 10:** \( 1.35759 \times 10^9 \)

If you need further explanations or have any questions, please let me know. Here are some additional topics you might find interesting:

1. How to multiply numbers in scientific notation.
2. How to divide numbers in scientific notation.
3. Understanding the impact of significant figures

Learn how to solve scientific notation problems involving addition and subtraction with step-by-step solutions. This covers aligning exponents, adding and subtracting coefficients, and combining results. Perfect for students in Grades 8-10.

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