F.2 Maths "Inequalities"（請列式）

johnleung_0716

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

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

Let a
火中有火 發表於 3-4-2012 18:21

問左老師了 thx~

Kelvinso

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