{ (x+5) / (y-3) = 0 -----------------------------> ОДЗ: (y-3) не = 0
{ 2y^2 + x^2 - y = 40
=>
{ x + 5 = 0 --------------------------------------------------------------------------> x = -5
{ 2y^2 + (-5)^2 - y = 40 ----------------------> 2y^2 - y - 15 = 0 ----------> y1 = 3; y2 = -5\2