Write the following statements in the form of algebraic expressions.
One-fifth of y decreased by 22.

Answer

To convert the statement "One-fifth of y decreased by 22" into an algebraic expression, follow these steps:

### Step-by-Step Solution:

1. **Identify "One-fifth of y":**
- The phrase "one-fifth of y" means we need to take the variable \( y \) and divide it by 5. This can be expressed as:
\[ \frac{1}{5}y \quad \text{or} \quad \frac{y}{5} \]

2. **Identify "decreased by 22":**
- The term "decreased by" indicates that we need to subtract 22 from the expression we obtained in the first step.

3. **Combine the expressions:**
- Now we combine the two parts. We take the expression for "one-fifth of y" and subtract 22:
\[ \frac{y}{5} - 22 \]

4. **Final Expression:**
- Therefore, the algebraic expression for "One-fifth of y decreased by 22" is:
\[ \frac{y}{5} - 22 \]

### Final Answer:
\[ \frac{y}{5} - 22 \]