Respuesta :

Answer:

24

Step-by-step explanation:

  • 3x - 15 = x + 33 [sides opposite congruent angles in a triangle are congruent]
  • 2x - 15 = 33 [subtract x from both sides]
  • 2x = 48 [add 15 to both sides]
  • x = 24 [divide both sides by 2]
  • BC = 24 [BC = x]