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Maria969
a fost răspuns

calculeaza respectand ordinea efectuerii operatilor a) 412+2504+382 1235+705-845. 7500-(1250-1250) b 6204-2200-3000. 2845-820+2400 5780-(1075+2750) c) 933+(455+148) 1 187+(870-230) 10 000-(3019+2078)