[tex]\it Vom\ nota\ pre\c{\it t}ul\ ini\c{\it t}al\ cu\ \ x\\ \\ x-12\%\ din\ x = 264\ \Rightarrow\ x-\dfrac{12}{100}\cdot x=264|_{\cdot100}\ \Rightarrow\ 100x-12x=26400\ \Rightarrow\ \\ \\ \\ 88x=26400|_{:8}\ \Rightarrow\ 11x=3300|_{:11}\ \Rightarrow\ x=300\ \ell ei\ (\ pre\c{\it t}ul\ ini\c{\it t}al\ )[/tex]
