Respuesta :

oliver043

Answer:

x = 4

Step-by-step explanation:

4x + 17° + 57° + 90° = 180°

4x + 164 = 180

4x = 180 – 164

4x= 16

x = 16/4

x = 4

(or)

4x + 17 + 57 = 90

4x + 74 = 90

4x = 16

x = 4

x = 4

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