Respuesta :

mhanifa

Answer:

4

Step-by-step explanation:

  • 2r = 5s/2 - s/4                    ⇒ bring to common denominator
  • 2r = 10s/4 - s/4
  • 2r = 9s/4
  • 9s = 8r                                ⇒ multiply both sides by 4
  • s = 8r/9                               ⇒ divide both sides by 9
  • s = 8/9*9/2                         ⇒ replace r with 9/2, simplify
  • s = 4                                    ⇒ answer

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