12000-1+2000-300+100-5000
120+300-1000+300-299
1200+30+20+90-4000
300-400+200-1000
200-100-100-200-100
102-300-2000-10
120+300-1000+300-299
1200+30+20+90-4000
300-400+200-1000
200-100-100-200-100
102-300-2000-10
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Answers & Comments
2) -579
3)-2660
4)-900
5) -300
6) -2208