〔(-9)+(+3)(+5)〕÷〔(-4)(-3)〕

〔(-9)+(+3)(+5)〕÷〔(-4)(-3)〕
=-9+15÷12
=6÷12
=0.5

圖片參考：http://hk.yimg.com/i/icon/16/57.gif
[(-9)+(+3)(+5)]÷[(-4)(-3)]
=(-9+15)÷12
=6÷12
=0.5
圖片參考：http://hk.yimg.com/i/icon/16/57.gif

〔(-9)+(+3)(+5)〕÷〔(-4)(-3)〕
=(-9+3+5)÷(-4×-3)
=-1÷12
=0.083333333333...........
或12分之1(1/12)
1
－
12

2007-09-20 19:59:13 補充：
抱歉..上面錯了〔(-9) ( 3)( 5)〕÷〔(-4)(-3)〕 =(-9 3×5)÷(-4×-3)=(-9 15)÷(-12)=6÷(-12)=-0.5或-1/2

〔(-9)+(+3)(+5)〕÷〔(-4)(-3)〕
= [-9+(+3)(+5)]÷(-4)(-3)
= -9+12÷(+12)
= +3÷(+12)
= +4

希望幫到你啦!
這條是否中一題目?
我是中一的! ^^

1.正正得正 (+ + = +)
2.負負得負 ( - - = +)
3.正負得負 (+ - = -)
4.負正得負 ( - + = +)
記住啦~

2007-09-20 19:56:00 補充：
Sorry!〔(-9)+(+3)(+5)〕÷〔(-4)(-3)〕 = [-9+(+3)(+5)]÷(-4)(-3)= -9+15÷(+12)= +6÷(+12)= +2

〔(-9)+(3)(5)〕÷〔(-4)(-3)〕
=〔(-9)+(15)÷(12)〕
=6÷12
=1/2

[(-9)+(+3)(+5)]/[(-4)(-3)]
=(-9+3*5)/12
=(15-9)/12
=6/12
=1/2 or 0.5

-1÷12
- 1over12