Respuesta :

igoroleshko156

Answer:

x = 4

Step-by-step explanation:

All triangles add up to 180 degrees

76 + 17x + 9x = 180

76 + 17x + 9x - 76 = 180 - 76

26x / 26 = 104 / 26

x = 4

Answer:  x = 4

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