这些算式都要过程·没过程的不要进啊···
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/06/09 05:38:22
这些算式都要过程·没过程的不要进啊···
-14-15
-2/5-(2/5)
(-2/3)-1/12-(-1/4)
21-(-74)-32-(-97)
-14-15
-2/5-(2/5)
(-2/3)-1/12-(-1/4)
21-(-74)-32-(-97)
-14-15
=-14+(-15)
=-(14+15)
=-29
-2/5-(2/5)
=-2/5+(-2/5)
=-(2/5+2/5)
=-4/5
(-2/3)-1/12-(-1/4)
=(-2/3)+(-1/12)+1/4
=-(2/3+1/12)+1/4
=-3/4+1/4
=-(3/4-1/4)
=-1/2
21-(-74)-32-(-97)
=21+74-32+97
=95-32+97
=63+97
=160
=-14+(-15)
=-(14+15)
=-29
-2/5-(2/5)
=-2/5+(-2/5)
=-(2/5+2/5)
=-4/5
(-2/3)-1/12-(-1/4)
=(-2/3)+(-1/12)+1/4
=-(2/3+1/12)+1/4
=-3/4+1/4
=-(3/4-1/4)
=-1/2
21-(-74)-32-(-97)
=21+74-32+97
=95-32+97
=63+97
=160