Respuesta :

  • Answer:

x = 3

  • Step-by-step explanation:

Hi there !

DBC + CBV = 180°

DBC + BDC + DCB = 180°  }=> VBC = BDC + DCB

replace

20x + 5 = 9x - 2 + 40

solve the equation

20x - 9x = 40 - 2 - 5

11x = 33

x = 33 : 11

x = 3

Good luck !

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