I believe x = 23/105 because you would have to add 3/35 to both sides and when you add 2/15 to 3/35 you get an answer of 23/105.
Hope this helps!
Y = - 2x + 4
sjnddkmcdkcndkcmsknckdmckdndk
So -390 -- 220 = -170
That was the change between the beginning and end of the turn.