[tex]x \to cantitatea \ initiala \\\\ \frac{3}{5} \ din \ x= \frac{3}{5} * x \to \frac{3x}{5} - \ cat \ s-a \ cumparat \\\\ x^{(5} -\frac{3x}{5} = \frac{5x-3x}{5} \to \frac{2x}{5} - restul \\\\\\ \frac{2x}{5} =86 \\\\ x=\frac{5* \not 86}{\not 2} \\\\ x=5*43 \\\\ \boxed{x=215}[/tex]
