Thread: Equation with 2 sets of Brackets

I can do these normally but this one has confused me.




Then I get


so



This is wrong, why?
x is supposed to = -8

I assume that the starting equation is actually .

You are correct up to



.

That's right. but where's the extra 2x come from?


OOOMG I see, why do I make things SOOOOO much harder than they actually are??!! For some reason I was adding 2x to one side and subtracting it from the other.