[tex]x-cantitatea \ de \ porumb \\\\ \frac{2}{9} \ din \ x \to \frac{2}{9} *x = \frac{2x}{9} - pentru \ animalute \\\\ x^{(9}- \frac{2x}{9} = \frac{9x-2x}{9} \to \frac{7x}{9} - restul \\\\ \frac{2}{3} \ din \ \frac{7x}{9} \to \frac{2}{3}*\frac{7x}{9} =\frac{14x}{27} - pentru \ vanzare \\\\ \frac{7x}{9}^{(3} - \frac{14x}{27} = \frac{21x-14x}{27} \to \frac{7x}{27} - noul \ rest \\\\ 1q=100kg \\ 1t=1000kg \\\\\\ \frac{7x}{27}=28 \\\\ x=\frac{27* \not 28}{\not 7} =27*4 \\\\ \boxed{x=108q} \\\\ 108q=10800kg =10,8 t [/tex]
