Seudónimo Seudónimo
  • 19-05-2016
  • Chemistry
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20-20=X what is X? I don't know please help me

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AL2006
AL2006 AL2006
  • 19-05-2016
Sure you do. If you have 20 pennies in your pocket and somebody reaches into your pocket and takes 20 pennies out how many pennies are left in your pocket ? That's 'x'.
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