(-8)+10+2+(-1)-1+2-3-4+5-2/3+(-1/6)-(-1/4)-1/2-20+(-15)-(-17)--12-3/4+(-20.125)-6.5+1/8-(-0.75)-5.29+3.1-(-1.8)+(-0.1)-9.87

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(-8)+10+2+(-1)-1+2-3-4+5-2/3+(-1/6)-(-1/4)-1/2-20+(-15)-(-17)--12-3/4+(-20.125)-6.5+1/8-(-0.75)-5.29

(-8)+10+2+(-1)-1+2-3-4+5-2/3+(-1/6)-(-1/4)-1/2-20+(-15)-(-17)--12-3/4+(-20.125)-6.5+1/8-(-0.75)-5.29+3.1-(-1.8)+(-0.1)-9.87
(-8)+10+2+(-1)
-1+2-3-4+5
-2/3+(-1/6)-(-1/4)-1/2
-20+(-15)-(-17)--12
-3/4+(-20.125)-6.5+1/8-(-0.75)
-5.29+3.1-(-1.8)+(-0.1)-9.87

(-8)+10+2+(-1)-1+2-3-4+5-2/3+(-1/6)-(-1/4)-1/2-20+(-15)-(-17)--12-3/4+(-20.125)-6.5+1/8-(-0.75)-5.29+3.1-(-1.8)+(-0.1)-9.87
(-8)+10+2+(-1)
=10+2-1-8
=3
-1+2-3-4+5
=2+5-3-4-1
=-1
-2/3+(-1/6)-(-1/4)-1/2
=-8/12-2/12+3/12-6/12
=-13/12
-20+(-15)-(-17)--12
=17-15-20-12
=-30
-3/4+(-20.125)-6.5+1/8-(-0.75)
=(0.75-0.75)+(0.125-20.125)-6.5
=0-20-6.5
=-26.5
-5.29+3.1-(-1.8)+(-0.1)-9.87
=3.1+1.8-0.1-5.29-9.87
=4.9-5.39-9.87
=-0.49-9.87
=-10.36
如果本题有什么不明白可以追问,
另外发并点击我的头像向我求助,请谅解,

(-8)+10+2+(-1)=3
-2/3+(-1/6)-(-1/4)-1/2=-13/24
-20+(-15)-(-17)-(-12)?=-6
-3/4+(-20.125)-6.5+1/8-(-0.75)=-26.5
-5.29+3.1-(-1.8)+(-0.1)-9.87=-13.96

答案等于3