Question

$97 \times 1\frac{17}{64} + \frac{5}{9} \times \frac{3}{7} - 97 \times \frac{17}{64} + \frac{3}{7} \times \frac{4}{9}$
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Answer 1

Ответ:

$97 \times 1\frac{17}{64} + \frac{5}{9} \times \frac{3}{7} - 97 \times \frac{17}{64} + \frac{3}{7} \times \frac{4}{9} = 97 \times \frac{17}{64} + \frac{5}{21} - 97 \times \frac{17}{64} + \frac{4}{21} = \frac{5}{21} + \frac{4}{21} = \frac{5 + 4}{21} = \frac{9}{21} = \frac{3}{7}$