Answer:
Step-by-step explanation: distribute 4 on the left side and distribute 2 on the right side then you will get 4x+12=12+4x. You bring all the terms that have x on one side and the terms don’t have x on the other side, remember, when you bring terms from one side to the other, you must change the sign of the term. 4x-4x=12-12. 0x=0. Therefore, x=R, meaning every number will fits x.