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问题: (-1又2/3)+1又1/2+(+7又1/4)+(-2又1/3)+(-8又1/2)

从左往右按顺序算

解答:

(-1又2/3)+1又1/2+(+7又1/4)+(-2又1/3)+(-8又1/2)
=(-5/3)+3/2+(+29/4)+(-7/3)+(-17/2)
=[(-5/3)+(-7/3)]+[3/2+(29/4)+(-17/2)]
=(-4)+(-7+29/4)
=-11+29/4
=-15/4