-40 minus -20 is -20.
Negative twenty nine minus negative twenty one is negative eight.
Eighteen minus a negative 3 is twenty-one (21).
-30
-56
29
yes
Negative twenty nine minus negative twenty one is negative eight.
-20
-10
Eighteen minus a negative 3 is twenty-one (21).
-30
-56
-42
-28
Twenty
29
41