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8 October, 05:14

The product of two numbers is 21. If the first number is - 3, which equation represents this situation and what is the second number?

A.

The equation that represents this situation is x - 3 = 21. The second number is 24.

B.

The equation that represents this situation is 3x = 21. The second number is 7

C.

The equation that represents this situation is - 3x = 21. The second number is - 7.

D.

The equation that represents this situation is - 3 + x = 21. The second number is 18.

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Answers (2)
  1. 8 October, 06:59
    0
    C.

    The equation that represents this situation is - 3x = 21. The second number is - 7.
  2. 8 October, 07:21
    0
    Answer: The equation that represents this situation is - 3x = 21. The second number is - 7 (option C).

    Step-by-step explanation:

    Hi, the correct option is C.

    We have to analyze the information given to write the equation and corroborate the option chosen.

    So:

    first number = - 3

    Product means the result of multiplication, in this case, the product is number 21.

    Mathematically speaking:

    -3x = 21

    x = 21/-3

    x = - 7

    In conlclusion, he equation that represents this situation is - 3x = 21. The second number is - 7 (option C).

    Feel free to ask for more if it's necessary or if you did not understand something.
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Home » Mathematics » The product of two numbers is 21. If the first number is - 3, which equation represents this situation and what is the second number? A. The equation that represents this situation is x - 3 = 21. The second number is 24. B.
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