Answer:
x = 12
Step-by-step explanation:
An inscribed angle has half the measure of the arc it intercepts.
arc SU +arc UT = 180°
2(43°) +(9x -14)° = 180°
9x = 108 . . . . . . . divide by °, subtract 72, simplify
x = 12 . . . . . divide by 9
