Respuesta :

ferrybukantoro

Answer:

x = 5

Step-by-step explanation:

the Equation could be:

m L ABC + m L BAC = m L C (the outer angle)

4x-3 + 3x+8 = 5x+15

7x+5 = 5x+15

7x-5x = 15-5

2x = 10

x = 5

Recall

Sum of two interiors=exterior

  • 4x-3+3x+8=5x+15
  • 7x+5=5x+15
  • 7x-5x=15-5
  • 2x=10
  • x=5

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