方程式問題
回答 (3)
2007-05-26 2:56 am
✔ 最佳答案
2y÷3 － y÷4 = 12 2y/3 － y/4 = 12
8y/12 － 3y/12 = 12
5y/12=12
5y=144
y=28.8
2007-05-26 3:22 am
2y/3-y/4=12
8y-3y=144
5y=144
y=28.8
8y-3y=144
5y=144
y=28.8
2007-05-26 3:08 am
2y÷3-y÷4 = 12
2y/3 - y/4 =12
(8y-3y)/12 = 12 <----通分母
5y=144
y=5/144 OR 28.8
2y/3 - y/4 =12
(8y-3y)/12 = 12 <----通分母
5y=144
y=5/144 OR 28.8
收錄日期: 2021-04-28 14:37:26
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070525000051KK03060