PLEASE HELP!! THIS IS MY LAST QUESTION!! WILL GIVE BRAIN AND 5 Stars!!!

Answer:
x = 21/19
Step-By-Step Explanation:
9=x - x + 19x -12 {First you remove the opposites}
9= 19x -12 {Then yo move the terms}
-19x = -12 -9 {After that, you calculate}
-19x = -21 {Lastly, you divide both sides}
Solution: x = 21/19