Đáp án:
$\frac{0,375-0,3+3/11+3/12}{-0,625+0,5-5/11-5/12}$ +$\frac{1,5+1-0,75}{2,5+5/3-1,25}$
=$\frac{3/8-3/10+3/11+3/12}{-5/8+5/10-5/11-5/12}$ +$\frac{3/2+1-3/4}{5/2+5/3-5/4}$
=$\frac{3.(1/8-1/10+1/11+1/12)}{-5(1/8-1/10+1/11+1/12)}$ +$\frac{3.(1/2+1/3-1/4)}{5.(1/2+1/3-1/4)}$
=$\frac{-3}{5}$ +$\frac{3}{5}$ =0