-24-28-(-19)+(-24)-(-32)= 2/3-1/8-(-1/3)+(-3/8)= -2/3+(-1/6)-(-1/4)-1/2=

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-24-28-(-19)+(-24)-(-32)= 2/3-1/8-(-1/3)+(-3/8)= -2/3+(-1/6)-(-1/4)-1/2=
-24-28-(-19)+(-24)-(-32)= 2/3-1/8-(-1/3)+(-3/8)= -2/3+(-1/6)-(-1/4)-1/2=

-24-28-(-19)+(-24)-(-32)= 2/3-1/8-(-1/3)+(-3/8)= -2/3+(-1/6)-(-1/4)-1/2=
-24-28-(-19)+(-24)-(-32)
=-24-28+19-24+32
=-52-5+32
=-25
2/3-1/8-(-1/3)+(-3/8)
=(2/3+1/3)-(1/8+3/8)
=1-1/2
=1/2
-2/3+(-1/6)-(-1/4)-1/2
=-2/3-1/6+1/4-1/2
=-8/12-2/12+3/12-6/12
=-13/12
如果本题有什么不明白可以追问,
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-24-28-(-19)+(-24)-(-32)
= -24-28+19-24+32
=19+32-24-24-28
=51-76
=-25

2/3-1/8-(-1/3)+(-3/8)
= 2/3-1/8+1/3-3/8
=2/3+1/3-1/8-3/8
=1-1/2
=1/2

-2/3+(-1/6)-(-1/4)-1/2
= -2/3-1/6+1/4-1/2
=1/4-8/6
=-13/12

-24-28-(-19)+(-24)-(-32)
=-52+19-24+32
=-76+51
=-25
2/3-1/8-(-1/3)+(-3/8)
=2/3-1/8+1/3-3/8
=1-1/2
=1/2
-2/3+(-1/6)-(-1/4)-1/2
=-2/3-1/6+1/4-1/2
=-8/12-2/12-6/1...

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-24-28-(-19)+(-24)-(-32)
=-52+19-24+32
=-76+51
=-25
2/3-1/8-(-1/3)+(-3/8)
=2/3-1/8+1/3-3/8
=1-1/2
=1/2
-2/3+(-1/6)-(-1/4)-1/2
=-2/3-1/6+1/4-1/2
=-8/12-2/12-6/12+3/12
=-13/12
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