0
Anonymous
Positive 30.
Wiki User
12 - 4 = 8
12 - 12 = 0
Positive: e.g., +8 - (-4) = +12
Negative 18 minus positive 12 is negative 30.
-6
(+12)-(+15) = -3
20
It is: +12--12 = +24
3 minus -9 is 12.
negative 24
8
- 3 - 12 = -15