-16 - 4 = -20
-4 minus -12 is 8.
16
16 minus -4 is 20.
-12 - 4 = -16
-16 minus -9 is -7
-16-(-16)=0
28. Subtracting a negative number gives the same result as adding a positive.
45 minus -16 is 61.
16 minus -11 is 27.
-7 minus -4 is -3
-4 minus -34 is 30
16