(-3.635)-(-2.635)+(+1.456)+(-3.456)= 13-[26-(-22)+(-17)]= 3-7+11-15+19-23+27-31+35-39=(-3.635)-(-2.635)+(+1.456)+(-3.456)= 13-[26-(-22)+(-17)]= 3-7+11-15+19-23+27-31+35-39=各等于多少。

问题描述:

(-3.635)-(-2.635)+(+1.456)+(-3.456)= 13-[26-(-22)+(-17)]= 3-7+11-15+19-23+27-31+35-39=
(-3.635)-(-2.635)+(+1.456)+(-3.456)=
13-[26-(-22)+(-17)]=
3-7+11-15+19-23+27-31+35-39=
各等于多少。

(-3.635)-(-2.635)+(+1.456)+(-3.456)
=( -1)+(+1.456)+(-3.456)
=0.456+(-3.456)
=-3
13-[26-(-22)+(-17)]
=13-[48+(-17)]
=13-31
=-18
3-7+11-15+19-23+27-31+35-39
=-4+11-15+19-23+27-31+35-39
=7-15+19-23+27-31+35-39
=-8+19-23+27-31+35-39
=11-23+27-31+35-39
=-12+27-31+35-39
= -20

你想问什么的?详细点?

1、=(-3.635)+2.635+1.456-3.456=-1+(1.456-3.456)=-1+(-2)=-32、13-[26-(-22)+(-17)]=13-26+(-22)-(-17)=13-26-22+17=13+17-(26+22)=30-48=-183、=(3-23)+(11+19)+(35-15)+(27-7)-(31+39)=-20+...