The given expression is:

\[
4 + 5 - \frac{2}{5}
\]

To solve this, let's follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction):

1. First, handle the division:

\[
\frac{2}{5} = 0.4
\]

2. Now, rewrite the expression:

\[
4 + 5 - 0.4
\]

3. Perform the addition and subtraction:

\[
4 + 5 = 9
\]

\[
9 - 0.4 = 8.6
\]

So, the result is:

\[
8.6
\]

Would you like a detailed explanation, or do you have any questions?

Here are some related questions:
1. What is the result of \(6 + 3 - \frac{1}{3}\)?
2. Can you solve \(10 + 7 - \frac{3}{4}\)?
3. What is the value of \(8 - 2 + \frac{5}{6}\)?
4. How does the order of operations affect expressions like \(3 + 4 \times 2 - \frac{5}{3}\)?
5. What happens when both addition and multiplication are involved in a complex fraction?

**Tip:** Always handle division and multiplication before addition and subtraction!

Learn how to solve the expression 4 + 5 - 2/5 using the order of operations. This problem involves basic arithmetic concepts, including addition, subtraction, and division, making it ideal for students in Grades 4-6.

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