Answer:
x = 116
Step-by-step explanation:
The sum of the angles of a 4 sided polygon is 360
96+x+64+84 = 360
Combine like terms
x+244=360
Subtract 244 from each side
x+244-244=360-244
Sum of all angles of a quadrilateral = 360°
So, 96° + 84° + 64° + x° = 360°
=> 244° + x° = 360°
=> x° = 360° - 244°
=> x° = 116°
=> x = 116
