\[\boxed{\mathbf{4.}\mathbf{38}}\]
\[- 348 \rightarrow 348\]
\[2145 \rightarrow - 2145\]
\[- 171 \rightarrow 171\]
\[53 \rightarrow - 53\]
\[5 \rightarrow - 5\]
\[- 1 \rightarrow 1\]
\[1 \rightarrow - 1\]
\[- 9,3 \rightarrow 9,3\]
\[- 19,6 \rightarrow 19,6\]
\[0,7 \rightarrow - 0,7\]
\[- \frac{4}{9} \rightarrow \frac{4}{9}\]
\[5\frac{11}{13} \rightarrow - 5\frac{11}{13}\]
\[- 1\frac{1}{4} \rightarrow 1\frac{1}{4}\]
\[\frac{1}{16} \rightarrow - \frac{1}{16}\]