Add (−18) and (5).(1 po

The sum of (-18) and (5) is -13.

To add (-18) and (5), follow these steps:

Step 1: Write down the numbers vertically, one below the other.
```
-18
+ 5
```
Step 2: Start by adding the numbers in the ones place. In this case, it's 8 + 5, which equals 13.

Step 3: Write down the ones digit (3) below the line.

```
-18
+ 5
-------
3
```

Step 4: Since you are adding a positive number (5) to a negative number (-18), the result will be negative. So, write a negative sign (-) above the line.

```
-18
+ 5
-------
-3
```

Therefore, the sum of (-18) and (5) is -3.