Subtracting 1

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  • 1 - 1 = 0
  • 2 - 1 = 1
  • 3 - 1 = 2
  • 4 - 1 = 3
  • 5 - 1 = 4
  • 6 - 1 = 5
  • 7 - 1 = 6
  • 8 - 1 = 7
  • 9 - 1 = 8
  • 10 - 1 = 9
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What is 9 - 1 =

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