#### Answer

$-3$

#### Work Step by Step

The numbers being added have different signs.
To add these numbers, perform the following steps:
(1) Subtract the smaller absolute value to the bigger absolute value to obtain:
$|-11| - |8| = 11-8 = 3$
(2) The sum will have the same sign as the number with the bigger absolute value.
Since $|-11| \gt |8|$, then the sum will be negative.
Thus,
8+(-11) = -3$