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＜急＞一題中一數．．．＞＜唔該啦＞＜ｔｈｘｔｈｘｔｈｘ
2006-11-23 5:37 am
回答 (6)
2006-11-23 5:45 am
✔ 最佳答案
40x+60(1500-x)＝8000040x+60*1500-60x=80000
40x+90000-60x=80000
40x-60x=80000-90000
-20x=-10000
20x=10000
x=10000/20
x=5000
2006-11-22 21:47:07 補充：
wrong>3<x=10000/20x=500
參考: me
2006-11-23 5:55 am
４０ｘ＋６０（１５００－ｘ）＝８００００
40x+90000-60x =80000
90000-80000 =60x-40x
10000 =20x
500 =x
40x+90000-60x =80000
90000-80000 =60x-40x
10000 =20x
500 =x
參考: myself
2006-11-23 5:49 am
４０ｘ＋６０（１５００－ｘ）＝８００００
40x+90000-60x=80000 (拆括號 )
90000-20x=80000(同類項合拼)
-20x= -10000(移乘作除, 負負得正)
x=500
40x+90000-60x=80000 (拆括號 )
90000-20x=80000(同類項合拼)
-20x= -10000(移乘作除, 負負得正)
x=500
2006-11-23 5:47 am
4 0 x + 90000 - 60 x = 80000
- 2 0 x = 80000-90000
- 20 x =-10000
x = -10000/-20
x =500
- 2 0 x = 80000-90000
- 20 x =-10000
x = -10000/-20
x =500
參考: me
2006-11-23 5:42 am
４０ｘ＋６０（１５００－ｘ）＝８００００
40x + 90000 - 60x = 80000
-20X = -10000
X = 500
40x + 90000 - 60x = 80000
-20X = -10000
X = 500
2006-11-23 5:41 am
４０ｘ＋６０（１５００－ｘ）＝８００００
40x+90000-60x=80000
90000-20x=80000
10000=20x
x=500
40x+90000-60x=80000
90000-20x=80000
10000=20x
x=500
收錄日期: 2021-04-12 14:59:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061122000051KK04482