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5. Calculează, respec 7+8+(23x3-45) - 6 = 72 x 5 (276-8 x 9) + 50 = 279-179+(50 + 25 x 3) - 25 = 5x(24 x 2 − 40 + 10) + 2 000 = (238 x 4-781)-(252 - 198) = ​