x = 25/10. To find this answer, first put like-numbers on the same side. Put all of the x-variables in the same side, and the integers on the other. You should have: 22x - 12x = 8 + 17. Simplify: 10x = 25. You now need to further simplify it, to get x by itself. Divide both sides by 10, and you get your answer. Answer: x = 25/10 or 2.5