有事幫忙數學問題伍該伍該伍該救救救!

2007-11-20 5:23 am

(+12)+(-8)-(+3)
=?
=?

回答 (6)

2007-11-20 5:27 am

✔ 最佳答案

(+12)+(-8)-(+3)
=12-8-3
=4-3
=1

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2007-11-20 5:47 am

(+12)+(-8)-(+3)
= 12-8-3
= 1

因為:
(+)(-)=(-)
(-)(+)=(-)
(+)(+)=(+)
(-)(-)=(+)

參考: Myself

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2007-11-20 5:36 am

(+12)+(-8)-(+3)
=12-8-3
=4-3
=1

因為負負得正,正負得負

參考: 自己

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2007-11-20 5:32 am

(+12)+(-8)-(+3)
=12-8-3
=1

+(+)=(+)
+(-)=(-)
-(-)=(+)
-(+)=(+)

2007-11-19 21:33:41 補充：
sorry, the last one should be -( )=(-)

參考: me

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2007-11-20 5:28 am

(+12)+(-8)-(+3)

=12 - 8 - 3

=1

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2007-11-20 5:28 am

(+12)+(-8)-(+3)
=12-8-3
=12-11
=1

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