30% от (6целых 4 / 5 - 2 целых 3/4 ) : (2 целых 16/21 + 3 целых 2/3 )

Question

30% от (6целых 4 / 5 - 2 целых 3/4 ) : (2 целых 16/21 + 3 целых 2/3 )

Answer 1

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