So here's the problem. 2 X (8-2y/4) -y =-2. The author says that he simplifies the equation by adding 4 to both sides and gets this 2 x (8-2y) -4y = -8. So, my question is why is the 2 in the front not an 8? i.e, 8 x (8-2y) - 4y= -8.

Thanks for the help.