October 2020 0 123 Report
  Me corrigam pra ver se está errado?  Quanto é ( - 9/2 ) × ( - 1/2 ) ?
- ( + 9/2 ) × ( -1/2 ) = ( -9/2 ) × ( -1/2 ) = - ( - 9/4) = 9/4 positivo ?
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