如題,要步驟!
y - y/3 + y/5 = y/2 + y/4 + 1/6
計中一數學
2012-01-31 8:32 pm
回答 (2)
2012-01-31 8:54 pm
✔ 最佳答案
y - y/3 + y/5 = y/2 + y/4 + 1/660y-20y+12y=30y+15y+10(所有數x60
52y=45y+10
7y=10
y=10/7
2012-01-31 9:50 pm
y - y/3 + y/5 = y/2 + y/4 + 1/6
(15)(y-y/3+y/5)=(15)(y/2+y/4+1/6)
15y-5y+3y=15y/2+15y/4+15/6
(2)(4)(6)13y=(2*4*6)(15y/2+15y/4+15/6)
624y=360y+180y+120
84y=120
y=10/7
(15)(y-y/3+y/5)=(15)(y/2+y/4+1/6)
15y-5y+3y=15y/2+15y/4+15/6
(2)(4)(6)13y=(2*4*6)(15y/2+15y/4+15/6)
624y=360y+180y+120
84y=120
y=10/7
收錄日期: 2021-04-20 12:12:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120131000051KK00383