/x-2/ + 2 - x = 0
\(\Rightarrow\left\{{}\begin{matrix}x-2+2-x=0\\\left(-x\right)+2+2-x=0\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}x-x=0-2-2\\\left(-x\right)-x=0-2-2\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}x-x=-4\\\left(-x\right)-x=-4\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}2x=-4\\\left(-2x\right)=-4\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}x=\left(-4\right):2\\\left(-x\right)=\left(-4\right):\left(-2\right)\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}x=-2\\x=2\end{matrix}\right.\)
Vậy x = -2 hoặc x = 2
