4(3-y) - 5(6-y) = 0
2(y+3)+3(2y-1)+13=0
我五明點做,幫我拆拆數解下點解要甘做
thx
收錄日期: 2021-04-12 02:14:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081009000051KK01585