Respuesta :

choixongdong

Answer:

<ABC = 30°

Step-by-step explanation:

Vertical angles are equal

So

4x+2 = 7x - 19

-7x + 4x = -19 - 2

-3x = -21

   x = 7

<ABC = 4(7) + 2 = 28 + 2 = 30

<ABC = 30°

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