71/4+(-104/11)+(-2.25)+(-17.5)+(-116/11)怎么算？

71/4+(-104/11)+(-2.25)+(-17.5)+(-116/11)
=71/4-2.25-17.5+[(-116/11)+(-104/11)]
=71/4-9/4-17.5+(-220/11)
=62/4-17.5-20
=31/2-35/2-20
=-4/