A) 220+[4+ (-220)+(-36) = -32
b)(-9)-[(-6)+8] = -11
c)22.154+22.(-54) = 2200
\(\text{a. 220+[4+ (-220)+(-36)}\\ =220+\left[4+-220+-36\right]\\ =220+-252=-32\)
\( b)(-9)-[(-6)+8] \\ =-9+6-8=-11\)
\( c)22.154+22.(-54)\\ =22.\left(154-54\right)\\ =22.100=2200\)