(-40)-(+27)+19-24-(-32)变成-40-27+19-24+32之后怎么做?最好从头写到尾.

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(-40)-(+27)+19-24-(-32)变成-40-27+19-24+32之后怎么做?最好从头写到尾.(-40)-(+27)+19-24-(-32)变成-40-27+19-24+32之后怎么做?

(-40)-(+27)+19-24-(-32)变成-40-27+19-24+32之后怎么做?最好从头写到尾.
(-40)-(+27)+19-24-(-32)变成-40-27+19-24+32之后怎么做?最好从头写到尾.

(-40)-(+27)+19-24-(-32)变成-40-27+19-24+32之后怎么做?最好从头写到尾.
-40-27+19-24+32 =-(40+27+24)+32+19 =51-91 =-40