F1數學...

2007-07-18 8:18 am
(10a*10b)/(15b*20a)=?

回答 (8)

2007-07-18 8:50 am
✔ 最佳答案
(10a*10b)/(15b*20a)=1/2 * 2/3=1/3

2007-07-18 00:56:17 補充:
unlike terms係唔可以乘埋一齊嘅,上面果位兄台好似錯誤將a同b這兩個unlike terms乘埋一齊喎。雖然答案一樣,但算式錯了,依中學的角度來看,也是很大的錯誤呀。
2007-07-18 10:33 pm
(10a*10b)/(15b*20a)
=100ab/300ab
=1/3
參考: me
2007-07-18 10:09 pm
100ab/300ab = 1/3
2007-07-18 7:40 pm
除了以上的算法
你亦可以下列的算法

  10a*10b
= ---------------
  15b*20a

  1*10b
= ---------------
  15b*2

  1*2
= ---------------
  3*2

  2
= ------------
   6
  
   1
= -------------
   3
2007-07-18 6:22 pm
(10a x 10b) / (15b x 20a)
= 100ab / 300ab
= 1 / 3
2007-07-18 5:20 pm
(10a*10b)/(15b*20a)

=100ab / 300ab

=1 / 3

hope can help you
參考: myself
2007-07-18 8:23 am
應該係咁o既

(10a*10b)/(15b*20a)
=100ab/300ab
=1/3
參考: 自己
2007-07-18 8:23 am
  10a*10b
= ---------------
  15b*20a

   1
= ------------
  10a*5b
  
   1
= -------------
  10a 5b


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