Convert the following rational numbers into decimals:
`(2)/(5)`

Answer

To convert the rational number \( \frac{2}{5} \) into a decimal, we can follow these steps:

### Step 1: Set up the division
We need to divide 2 by 5. Since 2 is smaller than 5, we will add a decimal point and a zero to 2 to make it 20.

### Step 2: Perform the division
Now, we divide 20 by 5.

- 5 goes into 20 exactly 4 times because \( 5 \times 4 = 20 \).

### Step 3: Subtract the result from 20
Now, we subtract 20 from 20:

- \( 20 - 20 = 0 \)

Since there is no remainder, we can conclude our division.

### Step 4: Write the result
The result of the division \( \frac{2}{5} \) is 0.4 in decimal form.

### Final Answer
Thus, \( \frac{2}{5} = 0.4 \).

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