〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕
回答 (9)
2007-09-21 4:30 am
✔ 最佳答案
-4__
12
3
2007-09-22 7:18 pm
〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕
=〔(+8)-(+20)〕÷(+12)
圖片參考：http://hk.yimg.com/i/icon/16/49.gif
=(-12)÷(+12)
圖片參考：http://hk.yimg.com/i/icon/16/26.gif
=(-1)
=〔(+8)-(+20)〕÷(+12)
圖片參考：http://hk.yimg.com/i/icon/16/49.gif
=(-12)÷(+12)
圖片參考：http://hk.yimg.com/i/icon/16/26.gif
=(-1)
2007-09-22 3:18 pm
〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕
(-4)(-5)=20 (負負得正)
(-4)(-3)=12 (負負得正)
((+8)-(+20))÷12
-12÷12
=-1
(-4)(-5)=20 (負負得正)
(-4)(-3)=12 (負負得正)
((+8)-(+20))÷12
-12÷12
=-1
2007-09-22 3:12 am
〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕
=〔(+8)-(20)〕÷〔12〕
=〔8-20〕÷12
=-12÷12
=-1
***記住要點***
1. 先拆括號(由細至大)
2. 負正得負, 負負得正, 正正得正
3. 先乘除後加減
=〔(+8)-(20)〕÷〔12〕
=〔8-20〕÷12
=-12÷12
=-1
***記住要點***
1. 先拆括號(由細至大)
2. 負正得負, 負負得正, 正正得正
3. 先乘除後加減
參考: 自己
2007-09-21 4:49 am
〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕
=〔+8+4(-5)〕÷〔(-4)(-3)〕
=+12x(-5)÷〔(-4)(-3)〕
= -12x5÷〔(-4)(-3)〕
= -60÷(+4x3)
= -60÷+12
= -5
記著口訣
正正得正，正負得負，負正得負，負負得正． 其實我剛剛上中學和剛剛學懂正負數
2007-09-20 20:50:52 補充：
〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕 =〔(+8)-(+20)〕÷(+12)=(-12)÷(+12)=(-1)
=〔+8+4(-5)〕÷〔(-4)(-3)〕
=+12x(-5)÷〔(-4)(-3)〕
= -12x5÷〔(-4)(-3)〕
= -60÷(+4x3)
= -60÷+12
= -5
記著口訣
正正得正，正負得負，負正得負，負負得正． 其實我剛剛上中學和剛剛學懂正負數
2007-09-20 20:50:52 補充：
〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕 =〔(+8)-(+20)〕÷(+12)=(-12)÷(+12)=(-1)
參考: 屯門良好學生
2007-09-21 4:37 am
〔(+8)-(-4)(-5)〕÷〔(-4)(-3)〕
=〔(+8)-(+20)〕÷(+12)
=(-12)÷(+12)
=(-1)
=〔(+8)-(+20)〕÷(+12)
=(-12)÷(+12)
=(-1)
參考: 自己計..
2007-09-21 4:30 am
(+8+4-5)/(12)
7/12
7/12
收錄日期: 2021-04-13 13:34:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070920000051KK03502