Question

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

Answer 1

3n +2(n+2)=9n+12
3n+2n+4=9n+12
5n-9n=12-4
-4n=8
n=-2

Answer 2

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

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

5n + 4 = 9n + 12

5n - 9n = 12 - 4

-4n = 8

n = 8/-4

n = -2