(+5)-(-2)=???
回答 (9)
2007-09-23 3:23 am
✔ 最佳答案
(+5)-(-2)=??? =+5+2
=+7
其實le d 數最緊要的係記往
負負得正
負正得負
正負得負
正正得正
正姐係 ，
負姐係 -
如正5減負2。減同負都係屬於負，咁負負得正。正5減負2就係等於正7
希望幫到你啦
如有唔明，係可以隨時問返我嫁，我會歡迎=]]
參考: me
2007-09-25 12:02 am
(+5) - (-2) = 7
正正得正, + + => +
負負得正, - - => +
正負得負, + - => -
負正得負, - + => -
好容易記, 只要記住兩個都相同, 咁就係正數啦. 兩個都不同, 咁就係負數啦.
正正得正, + + => +
負負得正, - - => +
正負得負, + - => -
負正得負, - + => -
好容易記, 只要記住兩個都相同, 咁就係正數啦. 兩個都不同, 咁就係負數啦.
2007-09-23 3:32 am
(+5)-(-2)
=5+2
=7
=5+2
=7
2007-09-23 3:27 am
(+5)-(-2)
=5+2
=7
=5+2
=7
收錄日期: 2021-04-23 20:03:56
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