5又1/3+(-3/4)+(+1又2/3)+(-8.25)(-4又7/8)+5又1/2+(-4又1/4)+(-3又1/8)

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5又1/3+(-3/4)+(+1又2/3)+(-8.25)(-4又7/8)+5又1/2+(-4又1/4)+(-3又1/8)
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5又1/3+(-3/4)+(+1又2/3)+(-8.25)(-4又7/8)+5又1/2+(-4又1/4)+(-3又1/8)
5又1/3+(-3/4)+(+1又2/3)+(-8.25)
(-4又7/8)+5又1/2+(-4又1/4)+(-3又1/8)

5又1/3+(-3/4)+(+1又2/3)+(-8.25)(-4又7/8)+5又1/2+(-4又1/4)+(-3又1/8)
5又1/3+(-3/4)+(1又2/3)+(-8.25)
=16/3-3/4+5/3-33/4
=(16/3+5/3)-(3/4+33/4)
=21/3-36/4
=7-9
=-2
(-4又7/8)+5又1/2+(-4又1/4)+(-3又1/8)
=(-39/8)+11/2+(-17/4)+(-25/8)
=(-39/8)+44/8+(-34/8)+(-25/8)
=(44-39-34-25)/8
=-54/8
=-27/4

1、=7-3/4-8又1/4
=7-9=-2
2、=-8+5又2/4-4又1/4=-8+1又1/4=-7.75

郁闷