Помогите пожаоуйста, начиная с 46 номера.

Решите задачу:

$0:5\frac{1}{19} =0\\\\ (5\frac{1}{19} - \frac{1}{19} )\cdot 6=5\cdot 6=30\\\\ 10\frac{1}{3} :2 \frac{1}{3}= \frac{31}{3} : \frac{7}{3}= \frac{31}{7} =4\frac{3}{7}\\\\ \frac{2}{3} \cdot \frac{6}{7} : \frac{4}{7} = \frac{2\cdot 6\cdot 7}{3\cdot 7\cdot 4} = \frac{12}{12}=1\\\\ \frac{3}{8} \cdot \frac{1}{9} : \frac{5}{16} = \frac{3\cdot 1\cdot 16}{8\cdot 9\cdot 5}= \frac{2}{15}$

$\frac{13}{14} \cdot \frac{7}{26} : \frac{3}{8}= \frac{13\cdot 7\cdot 8}{14\cdot 26\cdot 3} = \frac{2}{3}\\\\( 2\frac{2}{3} +1 \frac{5}{6}):1 \frac{1}{2}=( \frac{8}{3} + \frac{11}{6} ): \frac{3}{2} = \frac{27}{6} \cdot \frac{2}{3}=3$