1/2+5/6+11/12+19/20+29/30+41/42
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:2024/07/28 04:18:36
1/2+5/6+11/12+19/20+29/30+41/42
![1/2+5/6+11/12+19/20+29/30+41/42](/uploads/image/z/5714242-34-2.jpg?t=1%2F2%2B5%2F6%2B11%2F12%2B19%2F20%2B29%2F30%2B41%2F42)
36/7
裂项相消
=6-(1/2+1/6+1/12+1/20+1/30+1/42)
=6-(1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7)
=6-6/7
=36/7
裂项相消
=6-(1/2+1/6+1/12+1/20+1/30+1/42)
=6-(1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7)
=6-6/7
=36/7
1/2+5/6+11/12+19/20+29/30+41/42简便算法
1/2+5/6+11/12+19/20+29/30+41/42+55/56=
1\2+5\6+11\12+19\20+29\30+41\42
1/2+5/6+11/12+19/20+29/30+41/42=?=多少
1/2+5/6+11/12+19/20+29/30+41/42
1-1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72
2分之1+ 6分之5 +12分之11 +20分之19+30分之29+42分之41等于多少?
1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72 怎么做 要有过程
1/2+5/6+11/12+19/20+29/30+41/42+55/56怎么简算?
2分之1+6分之5+12分之11+20分之19+30分之29+42分之41+56分之55+72分之71+90分之89=?
1/2,-5/6,11/12,-19/20,29/30,-41/42……第55个和第100个数是()()
计算:2分之1+6分之5+12分之11+20分之19+30分之29+42分之41+.+110分之109=(过程也要