This is a high school grade question

Answer:
[tex]herre \: total \: angle \: in \: circle = 360 \\ then \\ \: 6x + 1 + x - 19 + 35 = 360 \\ 7x - 18 + 35 = 360 \\ 7x + 17 = 360 \\ 7x = 343 \\ x = \frac{343}{7} = 49 \\ x = 49degree \\ thank \: you[/tex]
6x + 1° + x - 19° + 35° = 360°
6x + x + 1° - 19° + 35° = 360°
7x + 1° - 19° + 35° = 360°
7x + (-18)° + 35° = 360°
7x + 17° = 360°
7x = 360° - 17°
7x = 343°
x = 343° : 7
x = 49°