|1/102-1/101|+|1/103-1/102|-|1/103-1/101|
=(1/101-1/102)+(1/102-1/103)-(1/101-1/103)
=1/101-1/103-1/101+1/103
=0
特殊的命运,你好:
|1/102-1/101|+|1/103-1/102|-|1/103-1/101|
=1/101-1/102+1/102-1/103-(1/101-1/103)
=1/101-1/103-1/101+1/103
=0
=1/102--1/101+1/103--1/102-(1/103-1/101)
=1/103--1/101--1/103+1/101
=0