[tex] \frac{x}{4}- \frac{y}{2} = \frac{28}{4}-2*3 \\ \\ \frac{x}{4} - \frac{y}{2} =7-6 \\ \\ \frac{x}{4} - \frac{y}{2} =1 \\ \\ x-2y=4 \\ x=4+2y \\ \\ \\ x+y=64 \\4+2y+y=64 \\ 3y=60 \\ y=20 \\ \\ x=4+2*20 \\ x=4+40 \\ x=44 \\ \\ Numarul~mai~mare~este~44~,varianta~b) [/tex]