+51 Next time put (-1) in parentheses, so that there aren't two operators next to each other, which makes things very messy! But, I think I understand your expression is -1-(-1)+(-1x)-(-1)+5x-1-2-5x-1-2. This simplifies to -1+1-x+1+5x-3-5x-3 = -x+1+5x-3-5x-3 = -x-5. The solution is -x-5.
