Solve the system using the substitution or elimination method $$\left\{ \begin{array}{l} 5x+2y = -8, \\ 7x+3y = -11. \end{array}\right.$$
Your answer is:
If there is more than one point, type the points separated by a comma, i.e.: (1,2),(3,4)).
If the system has no solution type none in the answer blank.