13
-9 minus -5 is -4
-4 minus 9 is -13
Negative twenty nine minus negative twenty one is negative eight.
-9 - -9 = 0
11
-25
-4 minus -34 is 30
-7 minus -4 is -3
It is minus ten.
That would be negative 27.
Positive 3 plus negative 5 minus negative 2 minus positive 4 is equal to -4.
The answer is nine.