Question

срочно даю 40 балов !!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

$1) \frac{9}{16} + \frac{7}{24} - \frac{3}{8} = \frac{9 \times 3}{48} + \frac{7 \times 2}{48} + \frac{3 \times 6}{48} = \frac{27 + 14 - 18}{48} = \frac{23}{48}$

$2) \frac{1}{3} - \frac{1}{6} + \frac{1}{4} = \frac{1 \times 4}{12} - \frac{1 \times 2}{12} + \frac{1 \times 3}{12} = \frac{4 - 2 + 3}{12} = \frac{5}{12}$

$\frac{2}{5} + \frac{4}{15} - \frac{5}{9} = \frac{2 \times 9}{45} + \frac{4 \times 3}{45} - \frac{5 \times 5}{45} = \frac{18 + 12 - 25}{45} = \frac{5}{25} = \frac{1}{5}$