计算 |141/111-141/99|+|141-42/99|

问题描述:

计算 |141/111-141/99|+|141-42/99|

|141/111-141/99|+|141/111-42/99|
=141/99-141/111+141/111-42/99
=(141/99-42/99)+(141/111-141/111)
=1