Question

18 5/12-7/12*1 19/21-17/72*2/3

Answer 1

Ответ:

$18 \frac{5}{12} - \frac{7}{12} \times 1 \frac{19}{21} - \frac{17}{72} \times \frac{2}{3} = \frac{221}{12} - \frac{1}{12} \times \frac{19}{3} - \frac{17}{36} \times \frac{1}{3} = \frac{221}{12} - \frac{19}{36} - \frac{17}{108} = \frac{1915}{108} = 17 \frac{79}{108}$