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153-20:20
153-1= 152
B) (3+24:3).14-23.6
9.14-23.6
126-138= -12
C) 120:(9+7.3)+232:8-33=
120:30+29-33
4+29-33
33-33= 0
D) 19-(168:4-2):4+42:3.2=
19-40:4+42:3.2
19-10+42:3.2
9+28= 37