推 a016258 :21/88 ? 04/26 13:57
→ justin0602 :對 04/26 13:57
→ justin0602 :應該怎麼算? 04/26 13:58
→ loveann :我把做法寄信給你了 04/26 14:10
→ majimmy :分子 7K , 3K ,9K | 分母 8r , 5r ,20r 04/26 14:18
→ majimmy :7k/8r + 3k/ 5r + 9k/20r =21/40 04/26 14:19
→ majimmy :k/r = 3/11 04/26 14:19
→ majimmy :所以 最大分數 7k/8r = 7/8 *3/11 04/26 14:20