I need to find x for this problem, in a category of geometry, help please!

Answer:
17
Step-by-step explanation:
(7x)° + 61° = 180° (interior angle Postulate)
(7x)° = 180° - 61°
(7x)° =119°
7x = 119
[tex]x = \frac{119}{7} \\ \\ \huge \red{ \boxed{x = 17}}[/tex]