to find the angle at point E you would take 180-105. which equals 75.
75+55= 130
180-130=50
Angle D= 50 degrees
Angle C= 55 degrees
Angle E= 75 degrees
The correct answer is A !
Pick a value for 'x' then solve for the 'y'
Ex: X=6 then 6-2y=2 then 4=2y then y=2y
So your answer will be 6,2.
Another answer to your question would be 4,1.