positive 6 minus positive 4 = (+6) - (+4)= +2
12 - 12 = 0
Positive: e.g., +8 - (-4) = +12
-18. Subtracting a positive number has the same effect as adding a negative.
Negative 18 minus positive 12 is negative 30.
positive 5 minus positive 11 = negative 6
0
(+12)-(+15) = -3
+6 - +3 = +3
6 - 10 = -4
12 - 4 = 8
3 minus -9 is 12.