Answer
$-5$
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 their absolute values.
$|-9|-|4|=9-4=5$
(2) Use the sign of the number with the bigger absolute value.
$-9+4=-5$
Thus, the sum is $-5$.
