Vì /x-2/-x =0
=>$\left \{ {{x-2-x=0} \atop {-(x-2)-x=0}} \right.$ =>$\left \{ {{x-x-2=0} \atop {-x+2-x=0}} \right.$ =>$\left \{ {{0-2=0} \atop {-x-x+2=0}} \right.$ =>$\left \{ {{-2=0}(vô lí) \atop {-2x+2=0}} \right.$ => $\left \{ {{− 2 = 0 ( v ô l í )} \atop {-2x=-2}} \right.$ =>$\left \{ {{− 2 = 0 ( v ô l í )} \atop {x=1}} \right.$
Vậy : x = 1