Question

Помогите пожалуйста решить 3 примера​

Answer 1

$1) \: \frac{7 \times 9}{3} - \frac{4}{3} \times \frac{13}{4} - \frac{16}{7} \times \frac{77}{24} = \frac{63}{3} - \frac{13}{3} - \frac{22}{3} = \frac{50}{3} - \frac{22}{ 3} = \frac{28}{3} = 9 \frac{1}{3} \\ 2) \: \frac{55}{48} \times \frac{12}{5} - ( \frac{55}{6} \times \frac{4}{15} + \frac{23}{9} ) \times \frac{2}{5} = \frac{11}{4} - \frac{45}{9} \times \frac{2}{5} = \frac{11}{4} - 5 \times \frac{2}{5} = \frac{11}{4} - 2 = 2.75 - 2 = 0.75 \\ 3) \: ( \frac{9}{4} + \frac{29}{6} ) \div \frac{17}{5} - \frac{3}{4} \times \frac{5}{3} = \frac{170}{24} \times \frac{5}{17} - \frac{5}{4} = \frac{50}{24} - \frac{5}{4} = \frac{50}{24} - \frac{30}{24} = \frac{20}{24} = \frac{5}{6}$