Answer: n = -2
Explanation:
First we want to distribute the -3 to the (3n+4) and after that we get
-9n-12=6
Next since we're trying to isolate "n" the variable we want to add 12 to both sides which gets us
-9n = 18
Lastly we want to divide both sides by -9 to get n alone which gets us our answer
n = -2