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Secondary I • 2yr.

Hi!

Can someone explain me what to do to find the answer to question like that:

-16➗(-2)

Thank you in advanced

Mathématiques
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Explanations (4)

  • Options
    Secondary IV • 2yr.
    • When you divide a negative number by a positive number then the quotient is negative.
    • When you divide a positive number by a negative number then the quotient is also negative.
    • When you divide two negative numbers then the quotient is positive.
    • When you divide two positive numbers then the quotient is positive.
    • They are same rules for multiplication.

    Here the two numbers are negatives, so the answer will be positive.

    You make the operation without the signs (16÷2) then check the signs and put it accordingly.

    16÷2=8, two negative numbers so the 8 is a positive number so -16 ÷ -2 = 8

    I hope it helps!

    im1057-1-regle-des-signes.png


  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

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    Team Alloprof • 2yr.

    Hi !

    When dividing and multiplying numbers with negative signs, you need to take account the rule of signs :


    image.png


    In your cas, since the two numbers are negative, the answer is gonna be positive. Then you can divide and keep the answer positive.

    If you have any other questions, feel free to ask them !

  • Options
    Secondary III • 2yr.

    When you are doing multiplications and divisions, 2 positive numbers always give you a positive answer, 1 negative number and 1 positive number give you a negative answer and 2 negative numbers give you a positive answer.

    *Sorry if there's mistakes, English is not my main language.

  • Options
    Secondary IV • 2yr.

    Hi!

    When both numbers you divided are positive or negative, the answer will be always positive. But if your numbers have different signs (one positive and the other negative) the answer will always be negative. Same rule for multiplication.

    I hope it helps:)

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