數學一題..........
回答 (3)
2008-01-02 12:52 am
✔ 最佳答案
4(y+1)-3(2y-4)=3(y-3)4y+4-6y+12=3y-9
4y-6y+3y=-9-4-12
-5y=-25
-5y/5=-25/5
-y=-5
-y(-y)=-5(-5)
y=25
參考: me
2008-01-02 2:40 am
4y+4-6y+12=3y-9
-2y+16=3y-9
25=5y
y=5
-2y+16=3y-9
25=5y
y=5
收錄日期: 2021-04-21 13:15:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080101000051KK02449