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
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 00:36:30
![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](/uploads/image/z/2732-68-2.jpg?t=4-5%2F6%2B7%2F12-9%2F20%2B11%2F30-13%2F42%2B15%2F56-17%2F72%2B19%2F90-21%2F90-21%2F110%2B23%2F132%3D%E5%A4%9A%E5%B0%91)
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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=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=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+...+1/11+1/12
=4-1/2+1/12
=43/12
放到excel里算的 3.35
3.35