Verified Answer :

dasetka

Vertical angles are equal to each other, so to solve this, you can set the angle measures equal to each other and solve for x.

        Z = Y             Replace X and Y with their values
4x - 17 = 2x + 7     Isolate the value. Start by adding 17 to both sides
      4x = 2x + 24   Subtract 2x from both sides
      2x = 24           Divide both sides by 2
        x = 12

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