1-5\6+7\12-9/20+11/30-13/42+15/56-17/72
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/24 15:53:30
1-5\6+7\12-9/20+11/30-13/42+15/56-17/72
![1-5\6+7\12-9/20+11/30-13/42+15/56-17/72](/uploads/image/z/7605136-64-6.jpg?t=1-5%5C6%2B7%5C12-9%2F20%2B11%2F30-13%2F42%2B15%2F56-17%2F72)
原式=1/6 + 7/12 - 9/20 + 11/30 - 13/42 + 15/56 - 17/72
=3/4 - 9/20 + 11/30 - 13/40 + 15/56 - 17/72
=3/10 + 11/30 - 13/42 + 15/56 - 17/72
=2/3 - 13/42 + 15/56 - 17/72
=5/14 + 15/56 - 17/72
=5/8 - 17/72
=7/18
=3/4 - 9/20 + 11/30 - 13/40 + 15/56 - 17/72
=3/10 + 11/30 - 13/42 + 15/56 - 17/72
=2/3 - 13/42 + 15/56 - 17/72
=5/14 + 15/56 - 17/72
=5/8 - 17/72
=7/18
计算1-【5/6】+【7/12】-【9/20】+【11/30】-【13/42】+【15/56】-【17/72】
-1+5/6-7/12+9/20-11/30+13/42-15/56+17/72
1-5\6+7\12-9/20+11/30-13/42+15/56-17/72
1/6+7/12-9/20+11/30-13/42+15/56-17/72简便运算
1+1/2-5/6+7/12-9/20+11/30-13/42+15/56-17/72 =
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
1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90 简便计算
1-6/5+12/7-20/9+30/11-42/13+56/15-72/17 如何简便计算.
1-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90
1-6/5+12/7-20/9+30/11-42/13+56/15-72/17+90/19简算
-1+6/5-12/7+20/9-11/30+13/42-15/56+17/72等于多少?