[tex]x-\ pretul \ initial \ \\ 10\% \ \ din \ \ x = \frac{10}{100} *x = \frac{1}{10} *x = \frac{x}{10} -\ reducerea\\ \\ x- \frac{x}{10} = \frac{10x-x}{10}= \frac{9x}{10} -\ noul \ pret \\ \\ \frac{9x}{10}=1 080 => x= \frac{10*1080}{9}= 10 *120 \\ \\ \boxed{x=1200} \\ \\ \frac{x}{10}= \frac{1200}{10}= 120 \ lei \ a \ fost \ reducerea[/tex]
