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calculeaza respectand ordinea efectuarii operatiilor a ) 412+2504+382= 1235+705-845= 7500-(1250-1250) = b) 6204 -2200-3000=
2845-820+2400=
5780-(1075+2750)=
c)933+455+148)=
1187+870-230)=
10000-(3019+2078