Question

ПОМОГИТЕ ПЖ ПОМОООООГИИИТЕЕЕ ;_( ​

Answer 1

1 номер

$\frac{5}{6} + \frac{4}{11} = \frac{55 + 24}{66} = \frac{79}{66} = 1 \frac{13}{66} \\ \\ \frac{11}{12} - \frac{3}{4} = \frac{11 - 9}{12} = \frac{1}{6} \\ \\ \frac{2}{3} \times \frac{6}{14} = \frac{2}{7} \\ \\ 2 \frac{3}{5} \times 1 \frac{12}{13} = \frac{13}{5} \times \frac{25}{13} = 5$

2 номер

$s = \frac{3}{7} \times \frac{3}{7} = \frac{9}{49}$

3 номер

$264 \times \frac{17}{24} = 11 \times 17 = 187$

4 номер

$\frac{3}{8}x + \frac{5}{18} x - \frac{1}{6} x = \frac{27}{72} x + \frac{20}{72}x - \frac{12}{72}x = \\ \\ \frac{27 + 20 - 12 }{72} x = \frac{35}{72} x = \frac{35}{72} \times 72 = 35$