[tex]\dfrac{\ 2x^{(2}}{12}-2=\dfrac{1}{-5} \Rightarrow \dfrac{x}{6}=2-\dfrac{1}{5}|_{\cdot6} \Rightarrow x=12-\dfrac{^{2)}6}{5}=12-\dfrac{12}{10}=12-1,2=10,8[/tex]
