Answer:
80°
Step-by-step explanation:
I have added some letters for ease.
wyzu is an interior angle. Therefore ∡wyz + ∡yzu = 180°
∡yzu + 147° = 180°
∡yzu = 180°-147
∡yzu = 33°
∡yzu + x° + 67° = 180° ( Supplementary Angle )
33° + x° + 67° = 180°
x° + 100° = 180°
x° = 180° - 100°
x° = 80°
