24 - (-12) = 24 + 12 = 36
18-36=-18 * * * * * That is 18 minus 36. But the question was about negative 18 minus 36. The answer to the question is -18 - 36 = -54
36
-20 - 36 = -56
36 - 12 = 24
Negative 18 minus positive 12 is negative 30.
-12 minus -6 is -6
-4 minus -12 is 8.
-36
Negative 8 minus 12 is negative 20.
-12 * * * * * Wrong! -4 minus -8 = -4 + 8 = +4
negative 24