a+12=12,a=_____
b-23=-23,b=_____
cx0=0,c-1=214,c=_____
d-43+64-74=47,d=______
收錄日期: 2021-05-03 14:21:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080220000051KK02141