1/ (-145) - (18 - 145)
= -145 - 18 + 145
= -18
2/ 111 + (-11 + 27)
= 111 - 11 + 27
= 100 + 27
= 127
3/ (27 + 514) - (486 - 73)
= 27 + 514 - 486 + 73
= (27 + 73) + (514 - 486)
= 100 + 28
= 128
4/ (36 + 79) + (145 - 97 - 36)
= 36 + 79 + 145 - 97 - 36
= 79 + 145 - 97
= 127
5/ 10 - [12 - (-9) - 1]
= 10 - [12 + 9 - 1]
= 10 - 12 - 9 + 1
= 10 - 20
= -10
6/ (38 - 29 + 43) - (43 + 38)
= 38 - 29 + 43 - 43 - 38
= (38 - 38) + (43 - 43) - 29
= -29
7/ 271 - [(-43) + 271 - (-17)]
= 271 - [-43 + 271 + 17]
= 271 + 43 - 271 + 17
= 43 + 17
= 60
8/ -144 - [29 - (+144) - (+144)]
= -144 - [29 - 144 - 144]
= -144 - 29 + 144 + 144
= -29 + 144
= 115