no, if it is a parallelogram then all four angles = 360, and two will equal 180.
Opposite angles are equal and consecutive angles are supplementary
Thinking from what you put that 2x + 10 and 3x - 20 are opposite each other (?)
if so, set them equal and solve 2x+10 = 3x - 20
-x + 10 = - 20
-x = -30 so x = 30
then if x = 30 each of those angles is 70 degrees
then 70 +y + 17 = 180
y + 87 = 180 so y = 93