Respuesta :

Space

Answer:

x = 9

Step-by-step explanation:

The 2 angles are equal because of Corresponding Angles.

Step 1: Set up equation

(13x + 12) = 129

Step 2: Solve for x

  1. Subtract both sides by 12: 13x = 117
  2. Divide both sides by 13: x = 9

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