Subtracting Integers

The process of subtracting integers. »
tim madden

2-3:  Subtracting Integers
Addition and subtraction are inverse
operations—they “undo” each other.
Instead of subtracting a number you
can add its opposite.

So:  -5 - (-2) =
     -5 + 2   =
        -3

And:
17 - (-7) =
17 +  7   =
     24
Lastly:
20 - (-21) =
20 + 21    =
    41
Find the difference of 32ºF and -10ºF.
So,    32 - (-10) =
        32 + 10   =
            42ºF
In other words:
1.  Change the subtraction to addition.
2.  Change the number you are subtracting to its opposite!
Fabuloso! 
Just remember:
To SUBTRACT an integer,
ADD its opposite!

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