[tex] \frac{5}{10} - \frac{1}{2} \times ( \frac{3}{4} - \frac{25}{100} ) = \\ = \frac{1}{2} - \frac{1}{2} \times ( \frac{3}{4} - \frac{1}{4} ) = \\ = \frac{1}{2} - \frac{1}{2} \times \frac{2}{4} = \\ = \frac{1}{2} - \frac{1}{4} = \\ = \frac{2}{4} - \frac{1}{4} = \\ = \frac{1}{4} = \\ = 0.25[/tex]
Ai gresit pt ca ai adus la acelasi numitor la inmultire. La inmultire faci simplificari daca se poate, iar daca nu, calculezi.
