要寫步x..
1.(+24)/(-3)+(-10)
2.(-6)x(+7)-(-3)
3.(+4)-(-15)/(-5)
收錄日期: 2021-04-13 19:03:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070926000051KK03864