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Преобразование пропорций

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  • 9/x = 6/8
  • 3/7 = 12/x
  • 2/5 = x/25
  • x/6 = 4/5
  • 5/x = 2/3
  • 4/5 = x/25
  • 7/x = 9/21
  • x/4 = 3/9
  • x/3 = 1/4
  • 1/4 = x/16
  • x/2 = 1/3
  • 5/6 = x/10
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