Respuesta :

You sum two vectors by summing the correspondent coordinates:

[tex]u=(u_x, u_y),\ v=(v_x, v_y) \implies u+v = (u_x+v_x, u_y+u_y)[/tex]

So, you have

[tex](-3,-5)+(-3,1) = (-3-3, -5+1)=(-6, -4)[/tex]