Can someone give me a hand

one angle is marked as 124 degrees.
The opposite angle would also be 124
so now you have 124 + 124 = 248 degrees
total interior angles = 360
360 - 248 = 112 degrees left
so z & y = 112/2 = 56 degrees
y = 56/2 = 28 degrees
please mark brainliest.