计算 (-13)+(+12)+(-7)+(+38)= 1/3-1/2-3/4+2/3= (-7.4)+2.6+(-0.6)+(-0.5)+5.9=(-0.5)+2又1/4+2.75+(-5又1/2)=
2022-02-18 06:43:05 40次 反馈错误 加入收藏 正确率 : 100%
题目内容:
计算 (-13)+(+12)+(-7)+(+38)= 1/3-1/2-3/4+2/3= (-7.4)+2.6+(-0.6)+(-0.5)+5.9=
(-0.5)+2又1/4+2.75+(-5又1/2)=
本题链接: