Đáp án: x=-\frac{10}{3}
Giải thích các bước giải:
a) $\begin{array}{l}\left | x.2+2 \right |-\left | 2x-3 \right |=5+3x\\\Leftrightarrow \left | 2x+2 \right |-\left | 2x-3 \right |=5+3x\\\Leftrightarrow \left | 2x+2 \right |-\left | 2x-3 \right |-3x=5\\\Leftrightarrow \left\{\begin{matrix}
2x+2-(2x-3)-3x=5\\
-(2x+2)-(2x-3)-3x=5\\
2x+2-(-(2x-3))-3x=5\\
-(2x+2)-(-(2x-3))-3x=5
\end{matrix}\right.\\\Leftrightarrow \left\{\begin{matrix}
x=0\\
x=-\frac{4}{7}\\
x=6\\
x=-\frac{10}{3}
\end{matrix}\right.\\\Leftrightarrow \left\{\begin{matrix}
x\in \varnothing \\
x\in \varnothing \\
x\in \varnothing \\
x=\frac{-10}{3}
\end{matrix}\right. \end{array}$
Vậy $x=-\frac{10}{3}$
