Answer:
x = 6
Explanation:
Ok first you need to get to combine like terms, so first subtract six from the left so it cancels out the left side and what you do to one side you have to do it to the other so after you do that you get
-3x = 2x -30
then you subtract 2x from the right side and 2x on the left side getting
-5x = -30
your goal is to get by itself so what you can do is divide -5 on both sides getting
x = 6
if you are wondering why its a positive and not a negative its because a negative divided or multiply by a negative makes a positive.