Answer:
x = 14
Step-by-step explanation:
8x + 26 and 3x are adjacent angles on a straight line and sum to 180°, that is
8x + 26 + 3x = 180
11x + 26 = 180 ( subtract 26 from both sides )
11x = 154 ( divide both sides by 11 )
8x + 26° + 3x = 180°
11x = 180 °- 26°
11x = 154°
