五分之三個f加1等於十分之五加f
答案是等於-1
我不知道過程
thx.
數學問題（代數一題）急！...
2010-10-27 6:47 pm
回答 (4)
2010-10-28 2:23 am
✔ 最佳答案
(3f/5)+1=(5+f)/103f/5+5/5=(5+f)/10
(3f+5)/5=(5+f)/10
10(3f+5)=5(5+f)
30f+50=25+5f
30f-5f=25-50
25f=-25
f=-25/25
f=-1
2010-10-31 12:00 am
3/5f+1=5/10+f
3/5f-f=5/10-1
-2/5f=-0.5
f=1.25
f不是=-1,係=1.25
2010-10-30 16:10:56 補充：
ME!!!(JK)
3/5f-f=5/10-1
-2/5f=-0.5
f=1.25
f不是=-1,係=1.25
2010-10-30 16:10:56 補充：
ME!!!(JK)
2010-10-27 9:33 pm
3f / 5 + 1 = (5+f)/10
10*3f/5 + 10*1 = 10*(5+f)/10
6f + 10 = 5+f
6f - f = 5 -10
5f = -5
f = -5 / 5
f = -1
10*3f/5 + 10*1 = 10*(5+f)/10
6f + 10 = 5+f
6f - f = 5 -10
5f = -5
f = -5 / 5
f = -1
收錄日期: 2021-04-13 17:36:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101027000051KK00295