ben_aric
幼苗
共回答了24个问题采纳率:91.7% 举报
(-25)+34+156+(-65)
=34+156-65-25
=34+156-90
=190-90
=100
(-42)+57+(-84)+(-23)
=57-84-23-42
=57-84-65
=57-65-84
=-8-84
=-92
(-301)+125+301 +(-75)
=(-301)+301+125+(-75)
=0+125-75
=50
41+(-23)+(-31)+0
=41-23-31+0
=18-31
=-13
1年前
9