0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4

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0.75+(-23/4)+(0.125)+(-125/7)+(-40.75+(-23/4)+(0.125)+(-125/7)+(-40.75+(-23/4)+(0.125)+(-125/7)+(-40

0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4
0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4

0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4
0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4 1/8)
=0.75+(-2.75)+(0.125)+(-12 5/7)+(-4.125)
=0.75-2.75+0.125-12 5/7-4.125
=(0.75-2.75)+(0.125-4.125)-12 5/7
=-2-4-12 5/7
=-6-12 5/7
=-18 5/7
(即-18又5/7,也可以化为-131/7)
供参考!JSWYC

3/4-23/4+1/8-125/7-41/8=-20/4-125/7-40/8=-10-125/7=--195/7