1: \(\Leftrightarrow\left\{{}\begin{matrix}2x+3>=-8\\2x+3< =8\end{matrix}\right.\Leftrightarrow-\dfrac{11}{2}< =x< =\dfrac{5}{2}\)

2: \(\Leftrightarrow\left[{}\begin{matrix}-5x+3>1\\-5x+3< -1\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}-5x>-2\\-5x< -4\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x< \dfrac{2}{5}\\x>\dfrac{4}{5}\end{matrix}\right.\)