When morgan solved this system using the elimination method, she added the equations together and got the equation 4y=16 then she solved that equation and got y=4 . then she submitted 4 in the first equation for y and solved for x . she got x=4 . the point (4,4) is not the correct solution . state in a complete sentence where she made her first mistake . what is the correct solution to the system show your work in the space provides 2x+3y=20 -2x+y=4