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6 Calculati: a 46:23+{78-3.[(15+ 7.5): 5] -3.7); b 9. {8 + 7 - [6 +5. (4+3.(2 + 1))]}: (1 + 2 + 3 + ... + 9); c1+2 - {3 +4:15-6:7-8:09 - 1))}}.


Va rog repedee am nevoie dau corona​