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24 August, 03:20

Consider the equation: 3 (-4n - 9) = 21 Use the distributive property and properties of equality to solve for n.

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Answers (2)
  1. 24 August, 05:25
    0
    N = - 4

    Step-by-step explanation:

    3 (-4n - 9) = 21

    3 (-4 (-4) = 16 - 9) = 21, two negatives multiplied makes a positive

    3 (16 - 9 = 7) = 21

    3 (7) = 21!
  2. 24 August, 06:40
    0
    3 (-4n - 9) = 21

    Apply the distributive property.

    -12n - 27 = 21

    Apply the addition property of equality (add 27).

    -12n = 48

    Apply the division prop. of equality (divide by - 12)

    n = - 4

    Final answer!
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