Respuesta :

Answer:

x = 42°

Step-by-step explanation:

Since (3x+3) and 129 are corresponding angles, we can set them equal to one another and solve for x.

3x + 3 = 129

     - 3     - 3

      3x = 126

      /3      / 3

       x = 42°
X=42*.................

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