1.) a + 2a = 15
2.) 8b - 2b = 48
3.) 2v + 3 = v + 5
4.) y分之4 - 8 =0
5.) 27 = 6z + 3
收錄日期: 2021-04-13 14:40:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071028000051KK04529