(9) \( \left(\frac{2}{5}+\frac{3}{5}\right) \times 8 \)

To solve \( \left(\frac{2}{5}+\frac{3}{5}\right) \times 8 \), first we combine the fractions inside the parentheses. Since both fractions have the same denominator (5), we simply add the numerators: \( 2 + 3 = 5 \). This gives us \( \frac{5}{5} \), which equals 1. Now, we multiply that by 8: \( 1 \times 8 = 8 \). So, the final answer is 8! How cool is it that adding fractions can lead you to such a straightforward result?