1) (118*6+372):(38*35-34*37)-12=(708+372):(38*35-34*37)-12=1080:(38*35-34*37)-12=1080:(1330-1258)=1080:72=15
2)118*6+372:38*35-34*37-12=708+372:38*35-34*37-12=708+9,7*35-34*37-12=708+339,5-34*37-12=708+339,5-1258-12=(-222,5)
3)118*6+38*35-34*37+372-12=708+38*35-34*37+372-12=708+1330-34*37+372-12=708+1330-1258+372-12=1140
4) (118*6+372):38*35-(34*37-12)=(708+372):38*35-(34*37-12)=1080:38*35-(34*37-12)=28,4*35-(34*37-12)=994-(34*37-12)=994-(1258-12)=994-1246=(-252)