Сделайте пожалуйста сроно 777

$a)2 \frac{1}{3} k = 4 \frac{1}{2} \times 1 \frac{1}{9} \\ 2 \frac{1}{3} k = \frac{9}{2} \times \frac{10}{9} = 5$
$k = 5 \div 2 \frac{1}{3} = 5 \div \frac{7}{3} = 5 \times \frac{3}{7} \\ k = \frac{15}{7} = 2 \frac{1}{7}$
б)
$8 \frac{1}{2} m = 3 \frac{2}{3} \times 1 \frac{1}{11} \\ 8 \frac{1}{2} m = \frac{11}{3} \times \frac{12}{11} = 4$
$m = 4 \div 8 \frac{1}{2} = 4 \div \frac{17}{2} = \\ 4 \times \frac{2}{17} = \frac{8}{17}$
в)
$y \div \frac{4}{5} = 3 \frac{1}{8} \div 1 \frac{1}{4} \\ y \div \frac{4}{5} = \frac{25}{8} \div \frac{5}{4} = \frac{25}{8} \times \frac{4}{5} = \frac{5}{2}$
$y = \frac{5}{2} \times \frac{4}{5} = 2$
Г)
$z \div \frac{3}{14} = 3 \frac{1}{9} \div \frac{4}{9} \\ z \div \frac{3}{14} = \frac{28}{9} \times \frac{9}{4} = 7$
$z = 7 \times \frac{3}{14} = \frac{3}{2} = 1 \frac{1}{2} = 1.5$