1小明有2x個五元硬幣及x個二元硬幣。
自定一個條件,然後求x的一個可能值。
(a) 若硬幣值為$請答,則x=請答。
(b) 若硬幣總數為請答,則x=請答。
中一數學題!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2007-08-04 1:31 am
回答 (1)
2007-08-04 1:40 am
✔ 最佳答案
a) $ = 2 (5) + x (2) 括號內的是面值so $ = 2x +10 or $ = 2 (x+5)
b) 硬幣總數為Y
Y= 2+x
because it didn't said how much in there , only the how many cones
收錄日期: 2021-05-03 07:00:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070803000051KK03758