We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
238
1
avatar

Could someone please explain this to me; 

(-1) - (-9)

 Feb 9, 2018
 #1
avatar+101761 
+1

(-1) - (-9)

 

Think of negative numbers as COLD numbers (the freezer has a negative temp)

an positive numbers are HOT numbers.

 

Here you have  a temp of -1  you want to take away some cold (because -9 is a cold number)

 

If you take cold out of a room then the room gets warmer!

 

So take away a negative can replaced by adding.

 

Taking  away some cold air has the same effect as adding some warm air.

 Both times the room gets warmer.   Do you get it?

 

      - - = + + = +

so

(-1)-(-9) = (-1) + (+9) = -1+9 = 8

 

or

(-1)-(-9) = -1 - -9 = -1+9 = 8

 Feb 9, 2018

19 Online Users

avatar
avatar
avatar
avatar
avatar