Respuesta :

Answer:

15

Step-by-step explanation:

Given:

  • 5a - 10b = 45
  • b = 3,

Finding the value of a, solving the equation, considering the value of b=3:

  • 5a - 10*3 = 45
  • 5a = 45+30
  • 5a= 75
  • a= 75/5
  • a= 15

Correct choice is 15

Answer:

B. 15

Step-by-step explanation: