Evaluate the following
`-13 xx (7 - 8)`

Answer

To evaluate the expression \(-13 \times (7 - 8)\), we can follow these steps:

### Step 1: Simplify the expression inside the parentheses
First, we need to calculate the value of \(7 - 8\).

\[ 7 - 8 = -1 \]

### Step 2: Substitute the result back into the expression
Now we can substitute \(-1\) back into the original expression:

\[ -13 \times (7 - 8) = -13 \times (-1) \]

### Step 3: Multiply the numbers
Next, we multiply \(-13\) by \(-1\). Remember that multiplying two negative numbers results in a positive number:

\[ -13 \times -1 = 13 \]

### Final Answer
Thus, the value of the expression \(-13 \times (7 - 8)\) is:

\[ \boxed{13} \]

---