1.)
(a)0-[12+(-3)]
(b)(-12)除(+3分之1)x(-4分之1)
2.)x=2,y=3,z=5
(a)4x-2y
收錄日期: 2021-04-15 17:30:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080806000051KK02468