Answer:
x = 73
y = 38
Explanation:
In an isosceles trapezoid, the angle and side relationships are
Therefore, we see that the angle y = 38 and to find x we need to do some arithematic.

where A is the middle angle that forms a triangle with x and 31.
Now,

And



therefore,

Hence, to conclude,
x = 73 and y = 38.