Answer:
x = 4
Step-by-step explanation:
4x + 17° + 57° + 90° = 180°
4x + 164 = 180
4x = 180 – 164
4x= 16
x = 16/4
(or)
4x + 17 + 57 = 90
4x + 74 = 90
4x = 16
Thank you have a magnificent day ahead...
Crown (brainliest) please.