2道初一计算题,会的做下.|1/11-1/11|+|1/11-1/12|+|1/13-1/12||1/3-1/2|+|1/4-1/3|+|1/5-1/4|+……+|1/10-1/9|.= =

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2道初一计算题,会的做下.|1/11-1/11|+|1/11-1/12|+|1/13-1/12||1/3-1/2|+|1/4-1/3|+|1/5-1/4|+……+|1/10-1/9|.==2道初一计算

2道初一计算题,会的做下.|1/11-1/11|+|1/11-1/12|+|1/13-1/12||1/3-1/2|+|1/4-1/3|+|1/5-1/4|+……+|1/10-1/9|.= =
2道初一计算题,会的做下.
|1/11-1/11|+|1/11-1/12|+|1/13-1/12|
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+……+|1/10-1/9|
.= =

2道初一计算题,会的做下.|1/11-1/11|+|1/11-1/12|+|1/13-1/12||1/3-1/2|+|1/4-1/3|+|1/5-1/4|+……+|1/10-1/9|.= =
|1/11-1/11|+|1/11-1/12|+|1/13-1/12|
=1/11-1/11+1/11-1/12+1/12-1/13
=1/11-1/13
=2/143
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+……+|1/10-1/9|
=1/2-1/3-1/3+1/4-1/4+1/5+……1/9-1/9+1/10
=1/2+1/10
=6/10
=3/5

0+1/11-1/12+1/12-1/13=2/143
1/2-1/3+1/3-1/4+1/4-1/5+……1/9-1/10=1/2-1/10=2/5

第一题:=3/4574
第二题就忘了解法。
第一题的步骤:
=0+1/132-1/156
=0+24/20592
=3/4574

1/2-1/13