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calculeaza respectand ordinea operatiilor:285×29-29-(16-45÷5)×(4+20÷5)÷7÷8-8;29×(14-27÷3)×(3+15÷5)-410×(200÷10);90÷(100-9×9-5×2)×1000-(25÷6×0);9990+(9×5+25)÷(7×5-28)-(1600+227×3) va rog frumos dau coroana