負數一問~~有20分~

2007-07-28 2:33 am
(-4)(-6)-(-5)(+8)/(-5)(+2)-(-2)點做~~幫幫手~~要詳細解釋點計~唔該哂~~

回答 (7)

2007-07-28 8:03 pm
✔ 最佳答案
(-4)(-6)-(-5)(+8)/(-5)(+2)-(-2) (-5)(+2)-(-2)
=24+40 =(-10)-(-2)
=64 =(-10)+2
(-4)(-6),負負得正,所以係=24, =(-8)
而(-5)(+8),負正得負,=(-40),
但係因為(-5)前面有個負號,-(-40),
負負得正 (-5)(+2),負正得負,所以係(-10),
所以就係40 (-10)-(-2),負負得正,變左(-10)+2
(-10)+2=(-8),如果係(-10)-2就=(-12)
2007-07-29 5:33 am
(-4)(-6)-(-5)(+8)/(-5)(+2)-(-2)
=24-(-40)/(-10)-(-2)
=24+40/-10+2
=64/-8
=-8
參考: 我係數學天才
2007-07-28 8:53 pm
(-4)(-6)-(-5)(+8)/(-5)(+2)-(-2)
=(24+40)/(-8)
=8
2007-07-28 2:52 am
綜合以上ge答案:
(-4)(-6)-(-5)(+8)
= (-4)x(-6)-(-5)(+8)
= 24 - (-40)
= 64

(-5)(+2)-(-2)
= (-10)+2
= -8

64 / (-8)
= -8
2007-07-28 2:50 am
ssylvialiu329

已經計得好清楚!

但係漏左除!

64 / (-8)
= -8
2007-07-28 2:41 am
首先你要知道"負負得正 正正得正"的道理

(-4)(-6)-(-5)(+8)
= (-4)x(-6)-(-5)(+8)
= 24 - (-40)
= 64

(-5)(+2)-(-2)
= (-10)+2
= -8
參考: 自己
2007-07-28 2:37 am
1. 3
2.-5


收錄日期: 2021-04-13 00:52:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070727000051KK04230

檢視 Wayback Machine 備份