Last two questions in my packet

I've edited my previous post to replace the matrix method with a simpler one (and hopefully, used the correct data at the same time!).

The first set has no solutions (Multiply the second equation by -5 and you get 2x -5y = -3/2 which cannot hold at the same time as 2x - 5y = 3)

I entered the wrong data in the matrix approach!  But since that approach isn't one you understand, here's how to do it by a process of elimination:

I have no idea what you just said. I understand the no solution becuase thats what i kept getting but u lost me after