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warum wird bei minus + minus plus?

 28.10.2016
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You can think of negative numbers as cold numbers

and

positive numbers as hot numbers     (like with temperature)

 

If you take  cold  air out of a room then the room will get warmer.

 

so

 

3 - - 5 = 3+5  = 2

 

also look at this pattern

3 -   +2 = 1

3 -   +1 = 2

3-     0  = 3

If  I continue the pattern then,

3-    -1 = 4

3-    -2 = 5

 29.10.2016

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