When using the balance method, you want to have your variable "x" on one side of the equal sign and a number on the other side. So you would first take 4X and subtract it on both sides. 5X-4X-2=4X-4X+16. That gives you X-2=16. Next you need to add 2 to both sides. X-2+2=16+2. That gives you X=18. Hope that helped!