1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 10:09:20
![1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340](/uploads/image/z/1625224-40-4.jpg?t=1-1%2F10%2B3-1%2F40%2B5-1%2F88%2B7-1%2F154%2B9-1%2F238%2B11-1%2F340)
1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340
1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340
1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340
原式=1+3+5+7+9+11-(1/10+1/40+1/88+1/154+1/238+1/340)
=36-(1/2-1/5+1/5-1/8+1/8-1/11+1/11-1/14+1/14-1/17+1/17-1/20)×1/3
=36-(1/2-1/20)×1/3
=36-9/20×1/3
=36-3/20
=35又17/20
1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340
= 1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340
= 36-1/10-1/40-1/88-1/154-1/238-1/340
= 36-5/40-1/88-1/154-1/238-1/340
= 35.85
1-1/10+3-1/40+5-1/88+7-1/154+9-1/238+11-1/340原式 =1+3+5+7+9+11-(1/10+1/40+1/88+1/154+1/238+1/340)
=36-(1/2-1/5+1/5-1/8+1/8-1/11+1/11-1/14+1/14-1/17+1/17-1/20)×1/3
=36-(1/2-1/20)×1/3
=36-9/20×1/3
=36-3/20
=35.85