Tìm số nguyên x biết: 93 - |x + 6| + (-23) = -42

- Hướng dẫn giải

$$\begin{gathered} \begin{array}{l}\ast \text{TH1:\hspace{0.17em}}\mathrm{x}+6=112\\ \mathrm{x}=112-6\\ \mathrm{x}=106\end{array} \\ \begin{array}{l}\ast \text{TH2:\hspace{0.17em}}\mathrm{x}+6=-112\\ \mathrm{x}=-112-6\\ \mathrm{x}=-118\end{array} \\ \mathrm{Vậy} \mathrm{x} = -118 \mathrm{hoặc} \mathrm{x} = 106 \end{gathered}$$