Question

помогите .............​

Answer 1

Ответ:

$39 \frac{1}{10} - 17 \frac{3}{4} = 39 \frac{2}{20} - 17 \frac{15}{20} = 38 \frac{22}{20} - 17 \frac{15}{20} = 21 \frac{7}{20}$