Sirul de egalitati din enunt se scrie 5y+4y-z/3z⇔5y+4z/3x-x/3x=5z+4x/3z-z/3z⇔5y+4z/3z-1/3=5z+4x/3y-1/3= 5x+4y/3z-1/3 ⇔ 5y+4z/3x=5z+4x/3y=5x+4y/3z=5y+4z+5z+4x+5x+4y/3x+3y+3z+3z=9(x+y+z)/2(x+y+z)=3 si n = (5x+4y)(5y+4z)(5z+4x/xyz=5x+4y/z*5y+4z/x *5z+4x/y=(3*5x+4y/3z)*(3*(5y+4z/3x ) *(3 5z+4x/3y)=3²*3²*3²=729 Sunt cam multe calcule si sper sa intelegi tot ce-am zis Succes!!!
