-1-1=?
答案應該係1
但係計來計去都計唔到
係咪pure maths 先學架
a. maths
2007-10-12 12:48 am
回答 (5)
2007-10-14 6:02 am
✔ 最佳答案
-1-1=(-1)+(-1)
=-2
兩個-1加起來就等於-2
+1+1
=(+1)+(+1)
=+2
wish you can understand!!!!!!!!!
2007-10-15 16:51:55 補充：
補充:假設你有10元, 買鉛筆和鉛子筆各一支, 他們每支的價錢都是1元, 還剩下多少元? 10-1-1=8元 10-(1+1)=10-2=8元所以-1-1=-(1+1)=-2(需付2元)
參考: myself ^-^
2007-10-19 8:07 pm
-1-1=?
so easy!!!!!!!!!!
答案no1
it should-1-1=-2
do you know???????
so easy!!!!!!!!!!
答案no1
it should-1-1=-2
do you know???????
2007-10-15 4:01 am
你可以make條number line
-3 -2 -1 0 +1 +2 +3
減=向左 加=向右
咁-1 向左行一格(because -1-1)answer就係-2喇......
so.........-1-1= -2
hope can help u....
-3 -2 -1 0 +1 +2 +3
減=向左 加=向右
咁-1 向左行一格(because -1-1)answer就係-2喇......
so.........-1-1= -2
hope can help u....
參考: myself
2007-10-12 2:23 am
如果你係 -1乘-1 當然等於1 了，負負得正, 1x1=1
所以(-1)x(-1) =1
所以(-1)x(-1) =1
2007-10-12 1:03 am
-1-1=-2
收錄日期: 2021-04-13 13:51:32
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