幫忙解答以下二條方程式

2008-11-08 7:39 pm
幫忙解答以下二條方程式. 急
1) -(7P-3)/5-3P=27
2)4P+-3P-20/4=-5
要步驟
更新1:

2)4P+(-3P-20)/4=-5 對不起!因不會打分數,第二題是4P加4分之-3P-20=-5

回答 (4)

2008-11-08 8:03 pm
✔ 最佳答案
1)
-(7P-3)/5-3P=27
-(7P-3)/5 =27 +3P
-(7P-3) =135 + 15P
-7P+3 =135 + 15P
22P=-132
P=-6

2)
4P+-3P-20/4=-5
P-20/4=-5
P-5=-5
P=0
參考: 會考數學拿c既人~
2008-11-08 8:06 pm
1.) -(7P-3)/5-3P=27

(-7P+3)/5-15P/5=27
(-7P+3-15P)/5=27
(-22P+3)/5=27
-22P+3=27*5
-22P=135-3
P=-132/22
P=-6

2)4P+-3P-20/4=-5

4P-3P-20/4=-5
P-5=-5
P=10
參考: 自己
2008-11-08 7:56 pm
1) -(7P-3)/5-3P=27
-(7P-3)x1/5-3P=27
-7P+3-3P=135
-10P=133
P=-13.3

2)4P+(-3P)-20/4=-5
4P-3P-5=-5
P=-5+5
P=0
2008-11-08 7:52 pm
1)-(7P-3)/5-3P=27
-(7p-3)=27(5-3P)
-7P+3=135-81P
74P=132
P=132/74

2)4P+-3P-20/4=-5
16P-3p+20=-20
13P=-40
P=-40/13

我唔係太明你寫咩
仲有你有冇ANS?
有你寫出黎俾我CHECK我的ANS
參考: ME


收錄日期: 2021-04-29 16:16:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081108000051KK00682

檢視 Wayback Machine 備份