Question

Помогите пожалуйста
5/6-3/8+1/12
1/5+1/7-1/9

Answer 1

$\frac{5}{6} - \frac{3}{8} + \frac{1}{12} \\ \\ \frac{5 \times 4}{6 \times 4} - \frac{3 \times 3}{8 \times 3} + \frac{1 \times 2}{12 \times 2} \\ \\ \frac{20 - 9 + 2}{24} \\ \\ \frac{13}{24} \\ \\ 2) \frac{1}{5} + \frac{1}{7} - \frac{1}{9} \\ \\ \frac{1 \times 63}{5 \times 63} + \frac{1 \times 45}{7 \times 45} - \frac{1 \times 35}{9 \times 35} \\ \\ \frac{63 + 45 - 35}{315} \\ \\ \frac{73}{315}$