Question

Сложите дроби 3/9+5/12-9/3 равно

Answer 1

$\frac{3}{9} + \frac{5}{12} - \frac{9}{3} = \frac{3 \times 4 + 5 \times 3 - 9 \times 12}{36} = \frac{12 + 15 - 108}{36} = - \frac{81}{36}$