Question

(07.05)

What is the value of n in the equation 3n + 2(n + 2) = 9n + 12? (4 points)

a. −4
b. −2
c. 2
d. 4
Can someone please give me a step by step I am really struggling <3

Answer 1

Answer: n = -2

Explanation:

3n +2(n + 2) = 9n + 12

(simplify 2(n + 2)) =

3n + 2n + 4 = 9n + 12

(subtract 9n from both sides)

3n + 2n - 9n + 4 = 12

-4n + 4 = 12

(subtract 4 from both sides)

-4n = 8

(divide -4 from both sides)

n = -2