Question

19 целых 5/12 минус 8 целых 17/18

Answer 1

$19 \frac{5}{12} - 8 \frac{17}{18} \\ \\ \frac{95}{12} - 4 \frac{17}{9} \\ \\ - \frac{4}{1} \times \frac{17}{9} \\ \\ - \frac{ 4 \times 17}{ 9 \times 1} \\ \\ - \frac{68}{9} \\ \\ \frac{95}{12} - \frac{68}{9} \\ \\ \frac{285 - 272}{36} \\ \\ \frac{13}{36}$