Respuesta :

The Angles (3x - 3)° and 60° forms alternate interior Angle pair. hence,

  • (3x - 3)° = 60°

  • 3x = 63°

  • x = 21°

Answer:

x = 21

Step-by-step explanation:

3x-3 = 60 (congruent angles)

3x = 60+3

x = 63/3

x = 21

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