a)Daca x/y=3/5,y≠0,atunci4x+6y/x+y=.......................................
b)Dacax/4=y/7,atunci 9x-2y/x+3y=..........................................
c)Dacax/2=y/9,atunci10x-2y/5x+y=.........................................

DAU COROANA!!!