PLEASE HELP, i have no clue what to do and it has to be quick please :)

The sum of any interior angle with each exterior angles is always 180, and the sum of all the exterior angles in a polygon is always 360
if angle z= 64, its exterior angle is 116 degrees (180-64=116)
now knowing two of the exterior angles and the fact that the sum of the three is 360
360 - 116 - 103 = 141
x = 141 degrees

n=0

Step-by-step explanation: