LCM既問題(短除式)急~

2007-07-27 11:41 pm
我想大家幫我列一列條短除式,因為唔知點解有d用短除計黎計去都計唔到
24,42,78<~唔知係幾多
70.105.140<~=420(唔知岩唔岩)
thx~!

回答 (2)

2007-07-27 11:50 pm
✔ 最佳答案
列條短除式
6 |__24__42__78__
4 7 13

LCM of 24 , 42 , 78 = 6 x 4 x 7 x 13 = 2184

2007-07-27 15:50:24 補充:
    = space
2007-07-27 11:50 pm
2 L 24 42 78
3 L 12 21 39
  4 7 13
LCM = 2 x 3 x 4 x 7 x 13 = 2184.

5 L 70 105 140
7 L 14 21 28
2 L 2 3 4
  1 3 2

LCM = 5 x 7 x 2 x 1 x 3 x 2 = 420


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