Answers:
x = 141
y = 39
Step-by-step explanation
Angle x and angle 141 are congruent because they are corresponding angles, and because the lines are parallel. Corresponding angles are in the same corner. In this case it's the northwest corner.
Angles x and y are supplementary. They glue together to get a straight line. Which means the angles add to 180.
x+y = 180
141+y = 180
y = 180-141
y = 39