johnleung_0716 發表於 1-4-2012 04:13:48

F.2 Maths "Inequalities"(請列式)

6. The difference between two integers is 5, and their sum is less than 49. Find the largest value of the smaller integer.

火中有火 發表於 3-4-2012 18:21:45

Let a<b

b-a=5
a+b<49

寫好條式之後其實冇難度
自己試下先啦

johnleung_0716 發表於 3-4-2012 18:35:44

Let a
火中有火 發表於 3-4-2012 18:21 http://www.nakuz.com/bbs/images/common/back.gif
問左老師了 thx~

Kelvinso 發表於 21-12-2013 20:51:15

y+(y+5) ㄑ 49
2y          ㄑ44
y            ㄑ22
so,largest number is 21
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