Respuesta :

kritika3375

Answer:

x = 12°

Step-by-step explanation:

3x + 12° + 11x = 180° {being co-interior angles }

12° + 14x = 180°

14x = 180° - 12°

14x = 168°

x = 168° / 14

x = 12°

Gitartha

Answer:

12

Step-by-step explanation:

( 3x + 12 ) + 11x = 180°

14x = 180 - 12

14x = 168

x = 168÷14

x = 12

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