Respuesta :

9514 1404 393

Answer:

  9d +1 = 23.5

Step-by-step explanation:

=Simplifying, we have ...

  2d +4d -12 = 3

  6d = 15

  d = 15/6 = 5/2

Then 9d+1 is ...

  9(5/2) +1 = 45/2 +1 = 47/2

  9d +1 = 23.5

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