回复：回复：回复：回复：有没有好办法？

来源: 于 2011-07-11 15:21:06 [旧帖] [给我悄悄话] 本文已被阅读：次

I think that it should be [a*3*(5-b)-2]=0 or [a*3*(5-b)-b)]=0. Shoud not both equal to 0.

Thanks