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  • 4x?=40
    10
  • 5x?=35
    7
  • 4x?=24
    6
  • 5x?=30
    6
  • ?x9=45
    5
  • 4x?=16
    4
  • 5x?=20
    4
  • 5x?=10
    2
  • 5x?=45
    9
  • ?x8=40
    5
  • ?x7=35
    5
  • 4x?=8
    2
  • 5x?=15
    3
  • 5x?=25
    5
  • 5x?=40
    8
  • 5x?=50
    10
  • 4x?=32
    8
  • 4x?=4
    1
  • ?x7=28
    4
  • 5x?=5
    1
  • ?x8=32
    4
  • 4x?=12
    3
  • 4x?=36
    9
  • 4x?=28
    7
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