$$\frac{\left\textbar{} 1-9 \right\textbar-\left\textbar{} 9-4 \right\textbar}{1-9-9+4}=\frac{8-5}{-13}=-\frac{3}{13}$$，其负倒数为$$\frac{13}{3}=4\frac{1}{3}$$． 
$$\frac{\left\textbar{} 1-9 \right\textbar-\left\textbar{} 9-4 \right\textbar}{1-9-9+4}$$的值的负倒数是（~ ）．
1) $$4\frac{1}{3}$$ 
2) $$-\frac{3}{13}$$ 
3) $$1$$ 
4) $$-1$$ 