model answer: http://us.f6.yahoofs.com/hkblog/rDkOb8SWERnmmaR4UeTpiIbmgvVT_1/blog/20100406083132942.jpg?TTAyRvLBhaN5MRhK
我想問下,點解唔係84乘(11.28減11.28乘17.5%)????
更新1:
想問下,點解唔係84乘(11.28減11.28乘17.5%)????