Respuesta :

Answer:

11

Step-by-step explanation:

180 - 112 = 68

4x + 16 +5x - 3 + 68 = 180

simplify.

9x + 81 = 180. subtract 81 from 180

9x = 99. divide 99 by 9

x = 11.

CatLeafs
To find x add the two interior angles together and put them equal to 112 (the exterior angle).

ANSWER: 109/9