roncooley roncooley
  • 24-01-2020
  • Mathematics
contestada

what comes next in the series 21 18 15 12​

Respuesta :

piperlussier piperlussier
  • 24-01-2020

Answer:

9

Step-by-step explanation:

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elingleystudent elingleystudent
  • 24-01-2020

Answer:

9, 6, 3,0

Step-by-step explanation:

Answer Link

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