To simplify the expression \( 13 - (-19) \), we can rewrite it using the property that subtracting a negative number is the same as adding its positive counterpart:
\[ 13 - (-19) = 13 + 19 \]
Now, we can perform the addition:
\[ 13 + 19 = 32 \]
Thus, the simplified expression is \( 32 \).