Question

Doua treimi dintr-un numar se aduna cu 1,2. Rezultatul obtinut se imparte la (-2/3) si se obtine 15/4. Aflati numarul

Answer 1

Răspuns:

\frac{\frac{2}{3}*x}{\frac{-2}{3}} = \frac{15}{4}

$\frac{\frac{5}{-2}}{\frac{2}{3}}$*x = \frac{15}{4} * \frac{-2}{3}

\frac{2}{3}*x = \frac{5}{-2}

x = \frac{\frac{5}{-2}}{\frac{2}{3}}

x = \frac{5}{-2} * \frac{2}{3}

x = \frac{5}{-3}