Respuesta :

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14x-15=180-139
14x-15=41
14x=56
x=4
xenia168

Answer:

x = 4

Step-by-step explanation:

(14x - 15)° + 139° = 180°

14x - 15 + 139 = 180

14x + 124 = 180

14x = 56

x = 4

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