5又1/3+(-3/4)+(+1又2/3)+(-8.25)
3个回答

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