willia489 willia489
  • 04-10-2020
  • Mathematics
contestada

twice a number, decreased by 9 is 12

Respuesta :

annaasif33
annaasif33 annaasif33
  • 04-10-2020

Answer:

10.5

Step-by-step explanation:

Answer Link
ijateguzo ijateguzo
  • 04-10-2020

Answer:

10.5

Step-by-step explanation:

2x-9=12

2x=12+9

2x=21

x=21/2

x=10.5

Answer Link

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