Răspuns:
Explicație pas cu pas:
78
(25 + 29) : (53 - 44) + 3 x 789 = 54 : 9 + 2367 = 6 + 2367 = 2373
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79
(52 x 92 + 72 : 8) + 2 x 888 = (4784 + 9) + 1776 = 4793 + 1776 = 6569
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80
48 : 6 + (81 : 9) : (6 : 2) = 8 + 9 : 3 = 8 + 3 = 11
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81
(6009 + 31) + (28 : 7) x (32 : 4) = 6040 + 4 x 8 = 6040 + 32 = 6072
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85
(4 x 9) : 6 - 2 x (7 : 7) = 36 : 6 - 2 x 1 = 6 - 2 = 4
