30.10.05

加減乘除

解剖左一條佢識我,我唔識佢既統計計算,抹一把汗!唉~~~
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1 comment:

minghoho said...

是先加減再乘除，還是先乘除再加減.....定是先加後減再乘除，抑或先減後加唔乘除呢！請解說！

2:48 am

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