Respuesta :

Answer:

measurement of the indicated angle is 59°

Step-by-step explanation:

20x - 19 + 8x + 3 = 180

28x - 16 = 180

+16 +16

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28x = 196

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28 28

x = 7

8 (7) + 3 = 59

20 (7) - 19 = 121

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