4-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90-21/90-21/110+2
来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/04/30 03:16:41
4-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90-21/90-21/110+23/132=多少
4-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90-21/90-21/110+23/132
=4-(1/2+1/3)+1/3+1/4-(1/4+1/5)+1/5+1/6-(1/6+1/7)+.-(1/10+1/11)+1/11+1/13
=4-1/2-1/3+1/3+1/4-1/4-1/5+1/5+1/6+...+1/11+1/13
=4-1/2+1/13
=4-13/26+2/26
=4-11/26
=93/26
=4-(1/2+1/3)+1/3+1/4-(1/4+1/5)+1/5+1/6-(1/6+1/7)+.-(1/10+1/11)+1/11+1/13
=4-1/2-1/3+1/3+1/4-1/4-1/5+1/5+1/6+...+1/11+1/13
=4-1/2+1/13
=4-13/26+2/26
=4-11/26
=93/26
4-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90-21/90-21/110+2
1-3/2+5/6-7/12+9/20-11/30+13/42-15/56+17/72-19/90+21/110=?
1-6分之5+12分之7-20分之9+30分之11-42分之13+56分之15-72分之17+90分之19-110分21
1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90+21/110+23/132
1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90-21/110的简便算法
1/3-7/12+9/20-11/30+13/42-15/56+17/72-19/90+21/110
1+1/2-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90
1-5/6+7/12-9/20-11/30-13/42+15/56-17/72+19/90
5/6-7/12+9/20-11/30+13/42-15/56+17/72-19/90=
1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90 简便计算
简便计算:5/6-7/12+9/20-11/30+13/42-15/56+17/72-19/90
1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90