Regra de sinais na soma e subtração

Regra de sinais na soma e subtração



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    Sinais iguais positivo ( + )
    Exemplo:
    + . + = +
    — . — = +
    Sinais diferentes negativo ( — )
    + . — = —
    — . + = —

  • Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
    Sinais iguais, some.
    Sinais diferentes, subtraia.

    — — +
    ++ +
    -+ —
    + — —

    Espero ter ajudado!!! ^^


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− 1 = 1