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

Question

Mathematics

Emery Meyers

13 October, 16:34

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)

Know the Answer?

Mercedes Wolfe · Answer 1

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!

Harper Shaw · Answer 2

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!