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Student Question

Grade 6 • 1mo.

math strategy: how to find in quickly. Two numbers that when we add them we get 433 and when we subtract them it is 39 (the two exact numbers).

Mathematics
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Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

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

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    Team Alloprof • 1mo.

    Hi there!

    Thanks for tuning in :)

    It seems like you already asked this question? Just like my colleague answered, to solve this problem without using a trial and error method, you would have to use algebra:

    (x+y)+(xy)=433+39

    2𝑥=472

    𝑥=472/2

    𝑥=236

    And then we would have to integrate that number in the first equation:

    236+y=433

    𝑦=433−236

    y=197

    Just like my colleague said, keep in mind that this is a problem that couldn't be solved with this method as per the knowledge you learn in sixth grade!

    Hope that helps!

    Ariane

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