Respuesta :

Answer:

x=3

Step-by-step explanation:

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Answer:

  • x = 3

Step-by-step explanation:

Solving for x:

  • 7(9 + x) = 84
  • 7(9) + 7x = 84
  • 63 + 7x = 84
  • 7x = 84 - 63
  • 7x = 21
  • x = 21/7
  • x = 3
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