Answer
$-8$
Work Step by Step
The addends (numbers being added have) different signs.
To add two numbers with different signs, perform the following steps:
(1) Subtract the smaller absolute from the bigger absolute value.
$|-11|-|3|=11-3=8$
(2) Use the sign of the number with the bigger absolute value.
$3+(-11)=-8$
Thus, the sum is $-8$.
